21 files changed, 877 insertions, 481 deletions

diff --git a/OpenSim/Region/ClientStack/LindenUDP/PriorityQueue.cs b/OpenSim/Framework/PriorityQueue.cs
index b62ec07..3e6fdaa 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/PriorityQueue.cs
+++ b/OpenSim/Framework/PriorityQueue.cs
@@ -34,50 +34,81 @@ using OpenSim.Framework;
 using OpenSim.Framework.Client;
 using log4net;
 
-namespace OpenSim.Region.ClientStack.LindenUDP
+namespace OpenSim.Framework
 {
     public class PriorityQueue
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        internal delegate bool UpdatePriorityHandler(ref uint priority, ISceneEntity entity);
+        public delegate bool UpdatePriorityHandler(ref uint priority, ISceneEntity entity);
 
-        // Heap[0] for self updates
-        // Heap[1..12] for entity updates
+        /// <summary>
+        /// Total number of queues (priorities) available
+        /// </summary>
+        public const uint NumberOfQueues = 12;
 
-        internal const uint m_numberOfQueues = 12;
+        /// <summary>
+        /// Number of queuest (priorities) that are processed immediately
+        /// </summary.
+        public const uint NumberOfImmediateQueues = 2;
 
-        private MinHeap<MinHeapItem>[] m_heaps = new MinHeap<MinHeapItem>[m_numberOfQueues];
+        private MinHeap<MinHeapItem>[] m_heaps = new MinHeap<MinHeapItem>[NumberOfQueues];
         private Dictionary<uint, LookupItem> m_lookupTable;
+
+        // internal state used to ensure the deqeues are spread across the priority
+        // queues "fairly". queuecounts is the amount to pull from each queue in 
+        // each pass. weighted towards the higher priority queues
         private uint m_nextQueue = 0;
+        private uint m_countFromQueue = 0;
+        private uint[] m_queueCounts = { 8, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1 };
+
+        // next request is a counter of the number of updates queued, it provides
+        // a total ordering on the updates coming through the queue and is more
+        // lightweight (and more discriminating) than tick count
         private UInt64 m_nextRequest = 0;
 
+        /// <summary>
+        /// Lock for enqueue and dequeue operations on the priority queue
+        /// </summary>
         private object m_syncRoot = new object();
         public object SyncRoot {
             get { return this.m_syncRoot; }
         }
 
-        internal PriorityQueue() : this(MinHeap<MinHeapItem>.DEFAULT_CAPACITY) { }
+#region constructor
+        public PriorityQueue() : this(MinHeap<MinHeapItem>.DEFAULT_CAPACITY) { }
 
-        internal PriorityQueue(int capacity)
+        public PriorityQueue(int capacity)
         {
             m_lookupTable = new Dictionary<uint, LookupItem>(capacity);
 
             for (int i = 0; i < m_heaps.Length; ++i)
                 m_heaps[i] = new MinHeap<MinHeapItem>(capacity);
+
+            m_nextQueue = NumberOfImmediateQueues;
+            m_countFromQueue = m_queueCounts[m_nextQueue];
         }
+#endregion Constructor
 
-        internal int Count
+#region PublicMethods
+        /// <summary>
+        /// Return the number of items in the queues
+        /// </summary>
+        public int Count
         {
             get
             {
                 int count = 0;
                 for (int i = 0; i < m_heaps.Length; ++i)
                     count += m_heaps[i].Count;
+                
                 return count;
             }
         }
 
+        /// <summary>
+        /// Enqueue an item into the specified priority queue
+        /// </summary>
         public bool Enqueue(uint pqueue, IEntityUpdate value)
         {
             LookupItem lookup;
@@ -91,7 +122,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 lookup.Heap.Remove(lookup.Handle);
             }
 
-            pqueue = Util.Clamp<uint>(pqueue, 0, m_numberOfQueues - 1);
+            pqueue = Util.Clamp<uint>(pqueue, 0, NumberOfQueues - 1);
             lookup.Heap = m_heaps[pqueue];
             lookup.Heap.Add(new MinHeapItem(pqueue, entry, value), ref lookup.Handle);
             m_lookupTable[localid] = lookup;
@@ -99,20 +130,62 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             return true;
         }
 
-        internal bool TryDequeue(out IEntityUpdate value, out Int32 timeinqueue)
+        /// <summary>
+        /// Remove an item from one of the queues. Specifically, it removes the
+        /// oldest item from the next queue in order to provide fair access to
+        /// all of the queues
+        /// </summary>
+        public bool TryDequeue(out IEntityUpdate value, out Int32 timeinqueue)
         {
-            for (int i = 0; i < m_numberOfQueues; ++i)
+            // If there is anything in priority queue 0, return it first no
+            // matter what else. Breaks fairness. But very useful.
+            for (int iq = 0; iq < NumberOfImmediateQueues; iq++)
             {
-                // To get the fair queing, we cycle through each of the
-                // queues when finding an element to dequeue, this code
-                // assumes that the distribution of updates in the queues
-                // is polynomial, probably quadractic (eg distance of PI * R^2)
-                uint h = (uint)((m_nextQueue + i) % m_numberOfQueues);
-                if (m_heaps[h].Count > 0)
+                if (m_heaps[iq].Count > 0)
                 {
-                    m_nextQueue = (uint)((h + 1) % m_numberOfQueues);
+                    MinHeapItem item = m_heaps[iq].RemoveMin();
+                    m_lookupTable.Remove(item.Value.Entity.LocalId);
+                    timeinqueue = Util.EnvironmentTickCountSubtract(item.EntryTime);
+                    value = item.Value;
 
-                    MinHeapItem item = m_heaps[h].RemoveMin();
+                    return true;
+                }
+            }
+            
+            // To get the fair queing, we cycle through each of the
+            // queues when finding an element to dequeue. 
+            // We pull (NumberOfQueues - QueueIndex) items from each queue in order
+            // to give lower numbered queues a higher priority and higher percentage
+            // of the bandwidth. 
+            
+            // Check for more items to be pulled from the current queue
+            if (m_heaps[m_nextQueue].Count > 0 && m_countFromQueue > 0)
+            {
+                m_countFromQueue--;
+                
+                MinHeapItem item = m_heaps[m_nextQueue].RemoveMin();
+                m_lookupTable.Remove(item.Value.Entity.LocalId);
+                timeinqueue = Util.EnvironmentTickCountSubtract(item.EntryTime);
+                value = item.Value;
+                
+                return true;
+            }
+            
+            // Find the next non-immediate queue with updates in it
+            for (int i = 0; i < NumberOfQueues; ++i)
+            {
+                m_nextQueue = (uint)((m_nextQueue + 1) % NumberOfQueues);
+                m_countFromQueue = m_queueCounts[m_nextQueue];
+
+                // if this is one of the immediate queues, just skip it
+                if (m_nextQueue < NumberOfImmediateQueues)
+                    continue;
+                
+                if (m_heaps[m_nextQueue].Count > 0)
+                {
+                    m_countFromQueue--;
+
+                    MinHeapItem item = m_heaps[m_nextQueue].RemoveMin();
                     m_lookupTable.Remove(item.Value.Entity.LocalId);
                     timeinqueue = Util.EnvironmentTickCountSubtract(item.EntryTime);
                     value = item.Value;
@@ -126,7 +199,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             return false;
         }
 
-        internal void Reprioritize(UpdatePriorityHandler handler)
+        /// <summary>
+        /// Reapply the prioritization function to each of the updates currently
+        /// stored in the priority queues. 
+        /// </summary
+        public void Reprioritize(UpdatePriorityHandler handler)
         {
             MinHeapItem item;
             foreach (LookupItem lookup in new List<LookupItem>(this.m_lookupTable.Values))
@@ -140,7 +217,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     {
                         // unless the priority queue has changed, there is no need to modify
                         // the entry
-                        pqueue = Util.Clamp<uint>(pqueue, 0, m_numberOfQueues - 1);
+                        pqueue = Util.Clamp<uint>(pqueue, 0, NumberOfQueues - 1);
                         if (pqueue != item.PriorityQueue)
                         {
                             lookup.Heap.Remove(lookup.Handle);
@@ -161,17 +238,18 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
+        /// <summary>
+        /// </summary>
         public override string ToString()
         {
             string s = "";
-            for (int i = 0; i < m_numberOfQueues; i++)
-            {
-                if (s != "") s += ",";
-                s += m_heaps[i].Count.ToString();
-            }
+            for (int i = 0; i < NumberOfQueues; i++)
+                s += String.Format("{0,7} ",m_heaps[i].Count);
             return s;
         }
 
+#endregion PublicMethods
+
 #region MinHeapItem
         private struct MinHeapItem : IComparable<MinHeapItem>
         {
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index 0f7f666..43903ce 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -385,6 +385,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public bool IsGroupMember(UUID groupID) { return m_groupPowers.ContainsKey(groupID); }
 
         /// <summary>
+        /// Entity update queues
+        /// </summary>
+        public PriorityQueue EntityUpdateQueue { get { return m_entityUpdates; } }
+        
+        /// <summary>
         /// First name of the agent/avatar represented by the client
         /// </summary>
         public string FirstName { get { return m_firstName; } }
@@ -3561,6 +3566,44 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 m_entityUpdates.Enqueue(priority, new EntityUpdate(entity, updateFlags, m_scene.TimeDilation));
         }
 
+        /// <summary>
+        /// Requeue an EntityUpdate when it was not acknowledged by the client. 
+        /// We will update the priority and put it in the correct queue, merging update flags 
+        /// with any other updates that may be queued for the same entity. 
+        /// The original update time is used for the merged update.
+        /// </summary>
+        private void ResendPrimUpdate(EntityUpdate update)
+        {
+            // If the update exists in priority queue, it will be updated.
+            // If it does not exist then it will be added with the current (rather than its original) priority
+            uint priority = m_prioritizer.GetUpdatePriority(this, update.Entity);
+
+            lock (m_entityUpdates.SyncRoot)
+                m_entityUpdates.Enqueue(priority, update);
+        }
+
+        /// <summary>
+        /// Requeue a list of EntityUpdates when they were not acknowledged by the client. 
+        /// We will update the priority and put it in the correct queue, merging update flags 
+        /// with any other updates that may be queued for the same entity. 
+        /// The original update time is used for the merged update.
+        /// </summary>
+        private void ResendPrimUpdates(List<EntityUpdate> updates, OutgoingPacket oPacket)
+        {
+            // m_log.WarnFormat("[CLIENT] resending prim update {0}",updates[0].UpdateTime);
+
+            // Remove the update packet from the list of packets waiting for acknowledgement
+            // because we are requeuing the list of updates. They will be resent in new packets
+            // with the most recent state and priority.
+            m_udpClient.NeedAcks.Remove(oPacket.SequenceNumber);
+
+            // Count this as a resent packet since we are going to requeue all of the updates contained in it
+            Interlocked.Increment(ref m_udpClient.PacketsResent);
+
+            foreach (EntityUpdate update in updates)
+                ResendPrimUpdate(update);
+        }
+
         private void ProcessEntityUpdates(int maxUpdates)
         {
             OpenSim.Framework.Lazy<List<ObjectUpdatePacket.ObjectDataBlock>> objectUpdateBlocks = new OpenSim.Framework.Lazy<List<ObjectUpdatePacket.ObjectDataBlock>>();
@@ -3568,6 +3611,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             OpenSim.Framework.Lazy<List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock>> terseUpdateBlocks = new OpenSim.Framework.Lazy<List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock>>();
             OpenSim.Framework.Lazy<List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock>> terseAgentUpdateBlocks = new OpenSim.Framework.Lazy<List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock>>();
 
+            OpenSim.Framework.Lazy<List<EntityUpdate>> objectUpdates = new OpenSim.Framework.Lazy<List<EntityUpdate>>();
+            OpenSim.Framework.Lazy<List<EntityUpdate>> compressedUpdates = new OpenSim.Framework.Lazy<List<EntityUpdate>>();
+            OpenSim.Framework.Lazy<List<EntityUpdate>> terseUpdates = new OpenSim.Framework.Lazy<List<EntityUpdate>>();
+            OpenSim.Framework.Lazy<List<EntityUpdate>> terseAgentUpdates = new OpenSim.Framework.Lazy<List<EntityUpdate>>();
+
             // Check to see if this is a flush
             if (maxUpdates <= 0)
             {
@@ -3583,7 +3631,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 float avgTimeDilation = 1.0f;
                 IEntityUpdate iupdate;
                 Int32 timeinqueue; // this is just debugging code & can be dropped later
-                
+
                 while (updatesThisCall < maxUpdates)
                 {
                     lock (m_entityUpdates.SyncRoot)
@@ -3688,24 +3736,33 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         if (update.Entity is ScenePresence)
                         {
                             objectUpdateBlocks.Value.Add(CreateAvatarUpdateBlock((ScenePresence)update.Entity));
+                            objectUpdates.Value.Add(update);
                         }
                         else
                         {
                             objectUpdateBlocks.Value.Add(CreatePrimUpdateBlock((SceneObjectPart)update.Entity, this.m_agentId));
+                            objectUpdates.Value.Add(update);
                         }
                     }
                     else if (!canUseImproved)
                     {
                         compressedUpdateBlocks.Value.Add(CreateCompressedUpdateBlock((SceneObjectPart)update.Entity, updateFlags));
+                        compressedUpdates.Value.Add(update);
                     }
                     else
                     {
                         if (update.Entity is ScenePresence && ((ScenePresence)update.Entity).UUID == AgentId)
+                        {
                             // Self updates go into a special list
                             terseAgentUpdateBlocks.Value.Add(CreateImprovedTerseBlock(update.Entity, updateFlags.HasFlag(PrimUpdateFlags.Textures)));
+                            terseAgentUpdates.Value.Add(update);
+                        }
                         else
+                        {
                             // Everything else goes here
                             terseUpdateBlocks.Value.Add(CreateImprovedTerseBlock(update.Entity, updateFlags.HasFlag(PrimUpdateFlags.Textures)));
+                            terseUpdates.Value.Add(update);
+                        }
                     }
     
                     #endregion Block Construction
@@ -3713,28 +3770,23 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 
     
                 #region Packet Sending
-        
-                //const float TIME_DILATION = 1.0f;
-
-
                 ushort timeDilation = Utils.FloatToUInt16(avgTimeDilation, 0.0f, 1.0f);
-    
+
                 if (terseAgentUpdateBlocks.IsValueCreated)
                 {
                     List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock> blocks = terseAgentUpdateBlocks.Value;
-    
+
                     ImprovedTerseObjectUpdatePacket packet = new ImprovedTerseObjectUpdatePacket();
                     packet.RegionData.RegionHandle = m_scene.RegionInfo.RegionHandle;
                     packet.RegionData.TimeDilation = timeDilation;
                     packet.ObjectData = new ImprovedTerseObjectUpdatePacket.ObjectDataBlock[blocks.Count];
-    
+
                     for (int i = 0; i < blocks.Count; i++)
                         packet.ObjectData[i] = blocks[i];
-
-                    
-                    OutPacket(packet, ThrottleOutPacketType.Unknown, true);
+                    // If any of the packets created from this call go unacknowledged, all of the updates will be resent
+                    OutPacket(packet, ThrottleOutPacketType.Unknown, true, delegate(OutgoingPacket oPacket) { ResendPrimUpdates(terseAgentUpdates.Value, oPacket); });
                 }
-    
+
                 if (objectUpdateBlocks.IsValueCreated)
                 {
                     List<ObjectUpdatePacket.ObjectDataBlock> blocks = objectUpdateBlocks.Value;
@@ -3746,8 +3798,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         
                     for (int i = 0; i < blocks.Count; i++)
                         packet.ObjectData[i] = blocks[i];
-        
-                    OutPacket(packet, ThrottleOutPacketType.Task, true);
+                    // If any of the packets created from this call go unacknowledged, all of the updates will be resent
+                    OutPacket(packet, ThrottleOutPacketType.Task, true, delegate(OutgoingPacket oPacket) { ResendPrimUpdates(objectUpdates.Value, oPacket); });
                 }
         
                 if (compressedUpdateBlocks.IsValueCreated)
@@ -3761,10 +3813,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         
                     for (int i = 0; i < blocks.Count; i++)
                         packet.ObjectData[i] = blocks[i];
-        
-                    OutPacket(packet, ThrottleOutPacketType.Task, true);
+                    // If any of the packets created from this call go unacknowledged, all of the updates will be resent
+                    OutPacket(packet, ThrottleOutPacketType.Task, true, delegate(OutgoingPacket oPacket) { ResendPrimUpdates(compressedUpdates.Value, oPacket); });
                 }
-        
+
                 if (terseUpdateBlocks.IsValueCreated)
                 {
                     List<ImprovedTerseObjectUpdatePacket.ObjectDataBlock> blocks = terseUpdateBlocks.Value;
@@ -3776,8 +3828,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         
                     for (int i = 0; i < blocks.Count; i++)
                         packet.ObjectData[i] = blocks[i];
-        
-                    OutPacket(packet, ThrottleOutPacketType.Task, true);
+                    // If any of the packets created from this call go unacknowledged, all of the updates will be resent
+                    OutPacket(packet, ThrottleOutPacketType.Task, true, delegate(OutgoingPacket oPacket) { ResendPrimUpdates(terseUpdates.Value, oPacket); });
                 }
             }
 
@@ -3969,7 +4021,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 SendFamilyProps = SendFamilyProps || update.SendFamilyProps;
                 SendObjectProps = SendObjectProps || update.SendObjectProps;
-                Flags |= update.Flags;
+                // other properties may need to be updated by base class
+                base.Update(update);
             }
         }
         
@@ -3980,6 +4033,29 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 m_entityProps.Enqueue(priority, new ObjectPropertyUpdate(entity,requestFlags,true,false));
         }
 
+        private void ResendPropertyUpdate(ObjectPropertyUpdate update)
+        {
+            uint priority = 0;
+            lock (m_entityProps.SyncRoot)
+                m_entityProps.Enqueue(priority, update);
+        }
+
+        private void ResendPropertyUpdates(List<ObjectPropertyUpdate> updates, OutgoingPacket oPacket)
+        {
+            // m_log.WarnFormat("[CLIENT] resending object property {0}",updates[0].UpdateTime);
+
+            // Remove the update packet from the list of packets waiting for acknowledgement
+            // because we are requeuing the list of updates. They will be resent in new packets
+            // with the most recent state.
+            m_udpClient.NeedAcks.Remove(oPacket.SequenceNumber);
+
+            // Count this as a resent packet since we are going to requeue all of the updates contained in it
+            Interlocked.Increment(ref m_udpClient.PacketsResent);
+
+            foreach (ObjectPropertyUpdate update in updates)
+                ResendPropertyUpdate(update);
+        }
+        
         public void SendObjectPropertiesReply(ISceneEntity entity)
         {
             uint priority = 0;  // time based ordering only
@@ -3995,6 +4071,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             OpenSim.Framework.Lazy<List<ObjectPropertiesPacket.ObjectDataBlock>> objectPropertiesBlocks =
                 new OpenSim.Framework.Lazy<List<ObjectPropertiesPacket.ObjectDataBlock>>();
 
+            OpenSim.Framework.Lazy<List<ObjectPropertyUpdate>> familyUpdates =
+                new OpenSim.Framework.Lazy<List<ObjectPropertyUpdate>>();
+
+            OpenSim.Framework.Lazy<List<ObjectPropertyUpdate>> propertyUpdates =
+                new OpenSim.Framework.Lazy<List<ObjectPropertyUpdate>>();
+            
             IEntityUpdate iupdate;
             Int32 timeinqueue; // this is just debugging code & can be dropped later
 
@@ -4013,6 +4095,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         SceneObjectPart sop = (SceneObjectPart)update.Entity;
                         ObjectPropertiesFamilyPacket.ObjectDataBlock objPropDB = CreateObjectPropertiesFamilyBlock(sop,update.Flags);
                         objectFamilyBlocks.Value.Add(objPropDB);
+                        familyUpdates.Value.Add(update);
                     }
                 }
 
@@ -4023,6 +4106,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         SceneObjectPart sop = (SceneObjectPart)update.Entity;
                         ObjectPropertiesPacket.ObjectDataBlock objPropDB = CreateObjectPropertiesBlock(sop);
                         objectPropertiesBlocks.Value.Add(objPropDB);
+                        propertyUpdates.Value.Add(update);
                     }
                 }
 
@@ -4030,12 +4114,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
             
 
-            Int32 ppcnt = 0;
-            Int32 pbcnt = 0;
+            // Int32 ppcnt = 0;
+            // Int32 pbcnt = 0;
             
             if (objectPropertiesBlocks.IsValueCreated)
             {
                 List<ObjectPropertiesPacket.ObjectDataBlock> blocks = objectPropertiesBlocks.Value;
+                List<ObjectPropertyUpdate> updates = propertyUpdates.Value;
 
                 ObjectPropertiesPacket packet = (ObjectPropertiesPacket)PacketPool.Instance.GetPacket(PacketType.ObjectProperties);
                 packet.ObjectData = new ObjectPropertiesPacket.ObjectDataBlock[blocks.Count];
@@ -4043,28 +4128,26 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     packet.ObjectData[i] = blocks[i];
 
                 packet.Header.Zerocoded = true;
-                OutPacket(packet, ThrottleOutPacketType.Task, true);
 
-                pbcnt += blocks.Count;
-                ppcnt++;
+                // Pass in the delegate so that if this packet needs to be resent, we send the current properties
+                // of the object rather than the properties when the packet was created
+                OutPacket(packet, ThrottleOutPacketType.Task, true,
+                          delegate(OutgoingPacket oPacket)
+                          {
+                              ResendPropertyUpdates(updates, oPacket);
+                          });
+
+                // pbcnt += blocks.Count;
+                // ppcnt++;
             }
             
-            Int32 fpcnt = 0;
-            Int32 fbcnt = 0;
+            // Int32 fpcnt = 0;
+            // Int32 fbcnt = 0;
             
             if (objectFamilyBlocks.IsValueCreated)
             {
                 List<ObjectPropertiesFamilyPacket.ObjectDataBlock> blocks = objectFamilyBlocks.Value;
-
-                // ObjectPropertiesFamilyPacket objPropFamilyPack =
-                //     (ObjectPropertiesFamilyPacket)PacketPool.Instance.GetPacket(PacketType.ObjectPropertiesFamily);
-                //
-                // objPropFamilyPack.ObjectData = new ObjectPropertiesFamilyPacket.ObjectDataBlock[blocks.Count];
-                // for (int i = 0; i < blocks.Count; i++)
-                //     objPropFamilyPack.ObjectData[i] = blocks[i];
-                //
-                // OutPacket(objPropFamilyPack, ThrottleOutPacketType.Task, true);
-
+                
                 // one packet per object block... uggh...
                 for (int i = 0; i < blocks.Count; i++)
                 {
@@ -4073,10 +4156,19 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                     packet.ObjectData = blocks[i];
                     packet.Header.Zerocoded = true;
-                    OutPacket(packet, ThrottleOutPacketType.Task);
 
-                    fpcnt++;
-                    fbcnt++;
+                    // Pass in the delegate so that if this packet needs to be resent, we send the current properties
+                    // of the object rather than the properties when the packet was created
+                    List<ObjectPropertyUpdate> updates = new List<ObjectPropertyUpdate>();
+                    updates.Add(familyUpdates.Value[i]);
+                    OutPacket(packet, ThrottleOutPacketType.Task, true,
+                              delegate(OutgoingPacket oPacket)
+                              {
+                                  ResendPropertyUpdates(updates, oPacket);
+                              });
+
+                    // fpcnt++;
+                    // fbcnt++;
                 }
                 
             }
@@ -4113,7 +4205,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             return block;
         }
-
+    
         private ObjectPropertiesPacket.ObjectDataBlock CreateObjectPropertiesBlock(SceneObjectPart sop)
         {
             //ObjectPropertiesPacket proper = (ObjectPropertiesPacket)PacketPool.Instance.GetPacket(PacketType.ObjectProperties);
@@ -11336,7 +11428,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <returns></returns>
         public byte[] GetThrottlesPacked(float multiplier)
         {
-            return m_udpClient.GetThrottlesPacked();
+            return m_udpClient.GetThrottlesPacked(multiplier);
         }
 
         /// <summary>
@@ -11371,6 +11463,22 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// handles splitting manually</param>
         protected void OutPacket(Packet packet, ThrottleOutPacketType throttlePacketType, bool doAutomaticSplitting)
         {
+            OutPacket(packet, throttlePacketType, doAutomaticSplitting, null);
+        }
+
+        /// <summary>
+        /// This is the starting point for sending a simulator packet out to the client
+        /// </summary>
+        /// <param name="packet">Packet to send</param>
+        /// <param name="throttlePacketType">Throttling category for the packet</param>
+        /// <param name="doAutomaticSplitting">True to automatically split oversized
+        /// packets (the default), or false to disable splitting if the calling code
+        /// handles splitting manually</param>
+        /// <param name="method">The method to be called in the event this packet is reliable
+        /// and unacknowledged. The server will provide normal resend capability if you do not
+        /// provide your own method.</param>
+        protected void OutPacket(Packet packet, ThrottleOutPacketType throttlePacketType, bool doAutomaticSplitting, UnackedPacketMethod method)
+        {
             if (m_debugPacketLevel > 0)
             {
                 bool logPacket = true;
@@ -11396,7 +11504,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     m_log.DebugFormat("[CLIENT]: Packet OUT {0}", packet.Type);
             }
             
-            m_udpServer.SendPacket(m_udpClient, packet, throttlePacketType, doAutomaticSplitting);
+            m_udpServer.SendPacket(m_udpClient, packet, throttlePacketType, doAutomaticSplitting, method);
         }
 
         public bool AddMoney(int debit)
@@ -11527,7 +11635,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             info.userEP = m_userEndPoint;
             info.proxyEP = null;
-            info.agentcircuit = new sAgentCircuitData(RequestClientInfo());
+            info.agentcircuit = RequestClientInfo();
 
             return info;
         }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs
index 7be8a0a..ca5501d 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs
@@ -135,7 +135,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         private int m_nextOnQueueEmpty = 1;
 
         /// <summary>Throttle bucket for this agent's connection</summary>
-        private readonly TokenBucket m_throttleClient;
+        private readonly AdaptiveTokenBucket m_throttleClient;
+        public AdaptiveTokenBucket FlowThrottle
+        {
+            get { return m_throttleClient; }
+        }
+
         /// <summary>Throttle bucket for this agent's connection</summary>
         private readonly TokenBucket m_throttleCategory;
         /// <summary>Throttle buckets for each packet category</summary>
@@ -176,9 +181,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 m_maxRTO = maxRTO;
 
             // Create a token bucket throttle for this client that has the scene token bucket as a parent
-            m_throttleClient = new TokenBucket(parentThrottle, rates.TotalLimit);
+            m_throttleClient = new AdaptiveTokenBucket(parentThrottle, rates.Total, rates.AdaptiveThrottlesEnabled);
             // Create a token bucket throttle for the total categary with the client bucket as a throttle
-            m_throttleCategory = new TokenBucket(m_throttleClient, rates.TotalLimit);
+            m_throttleCategory = new TokenBucket(m_throttleClient, 0);
             // Create an array of token buckets for this clients different throttle categories
             m_throttleCategories = new TokenBucket[THROTTLE_CATEGORY_COUNT];
 
@@ -189,7 +194,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 // Initialize the packet outboxes, where packets sit while they are waiting for tokens
                 m_packetOutboxes[i] = new OpenSim.Framework.LocklessQueue<OutgoingPacket>();
                 // Initialize the token buckets that control the throttling for each category
-                m_throttleCategories[i] = new TokenBucket(m_throttleCategory, rates.GetLimit(type));
+                m_throttleCategories[i] = new TokenBucket(m_throttleCategory, rates.GetRate(type));
             }
 
             // Default the retransmission timeout to three seconds
@@ -223,26 +228,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <returns>Information about the client connection</returns>
         public ClientInfo GetClientInfo()
         {
-///<mic>
-            TokenBucket tb;
-
-            tb = m_throttleClient.Parent;
-            m_log.WarnFormat("[TOKENS] {3}: Actual={0},Request={1},TotalRequest={2}",tb.DripRate,tb.RequestedDripRate,tb.TotalDripRequest,"ROOT");
-
-            tb = m_throttleClient;
-            m_log.WarnFormat("[TOKENS] {3}: Actual={0},Request={1},TotalRequest={2}",tb.DripRate,tb.RequestedDripRate,tb.TotalDripRequest,"  CLIENT");
-
-            tb = m_throttleCategory;
-            m_log.WarnFormat("[TOKENS] {3}: Actual={0},Request={1},TotalRequest={2}",tb.DripRate,tb.RequestedDripRate,tb.TotalDripRequest,"    CATEGORY");
-
-            for (int i = 0; i < THROTTLE_CATEGORY_COUNT; i++)
-            {
-                tb = m_throttleCategories[i];
-                m_log.WarnFormat("[TOKENS] {4} <{0}:{1}>: Actual={2},Requested={3}",AgentID,i,tb.DripRate,tb.RequestedDripRate,"      BUCKET");
-            }
-                
-///</mic>
-
             // TODO: This data structure is wrong in so many ways. Locking and copying the entire lists
             // of pending and needed ACKs for every client every time some method wants information about
             // this connection is a recipe for poor performance
@@ -254,12 +239,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             info.landThrottle = (int)m_throttleCategories[(int)ThrottleOutPacketType.Land].DripRate;
             info.windThrottle = (int)m_throttleCategories[(int)ThrottleOutPacketType.Wind].DripRate;
             info.cloudThrottle = (int)m_throttleCategories[(int)ThrottleOutPacketType.Cloud].DripRate;
-            // info.taskThrottle = m_throttleCategories[(int)ThrottleOutPacketType.State].DripRate + m_throttleCategories[(int)ThrottleOutPacketType.Task].DripRate;
             info.taskThrottle = (int)m_throttleCategories[(int)ThrottleOutPacketType.Task].DripRate;
             info.assetThrottle = (int)m_throttleCategories[(int)ThrottleOutPacketType.Asset].DripRate;
             info.textureThrottle = (int)m_throttleCategories[(int)ThrottleOutPacketType.Texture].DripRate;
-            info.totalThrottle = info.resendThrottle + info.landThrottle + info.windThrottle + info.cloudThrottle +
-                info.taskThrottle + info.assetThrottle + info.textureThrottle;
+            info.totalThrottle = (int)m_throttleCategory.DripRate;
 
             return info;
         }
@@ -346,8 +329,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             int asset = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f);
             // State is a subcategory of task that we allocate a percentage to
             int state = 0;
-            // int state = (int)((float)task * STATE_TASK_PERCENTAGE);
-            // task -= state;
 
             // Make sure none of the throttles are set below our packet MTU,
             // otherwise a throttle could become permanently clogged
@@ -358,19 +339,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             task = Math.Max(task, LLUDPServer.MTU);
             texture = Math.Max(texture, LLUDPServer.MTU);
             asset = Math.Max(asset, LLUDPServer.MTU);
-            state = Math.Max(state, LLUDPServer.MTU);
-
-            int total = resend + land + wind + cloud + task + texture + asset + state;
 
-            //m_log.DebugFormat("[LLUDPCLIENT]: {0} is setting throttles. Resend={1}, Land={2}, Wind={3}, Cloud={4}, Task={5}, Texture={6}, Asset={7}, State={8}, Total={9}",
-            //    AgentID, resend, land, wind, cloud, task, texture, asset, state, total);
+            //int total = resend + land + wind + cloud + task + texture + asset;
+            //m_log.DebugFormat("[LLUDPCLIENT]: {0} is setting throttles. Resend={1}, Land={2}, Wind={3}, Cloud={4}, Task={5}, Texture={6}, Asset={7}, Total={8}",
+            //                  AgentID, resend, land, wind, cloud, task, texture, asset, total);
 
             // Update the token buckets with new throttle values
             TokenBucket bucket;
 
-            bucket = m_throttleCategory;
-            bucket.RequestedDripRate = total;
-
             bucket = m_throttleCategories[(int)ThrottleOutPacketType.Resend];
             bucket.RequestedDripRate = resend;
 
@@ -399,22 +375,38 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_packedThrottles = null;
         }
 
-        public byte[] GetThrottlesPacked()
+        public byte[] GetThrottlesPacked(float multiplier)
         {
             byte[] data = m_packedThrottles;
 
             if (data == null)
             {
+                float rate;
+
                 data = new byte[7 * 4];
                 int i = 0;
 
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Resend].RequestedDripRate), 0, data, i, 4); i += 4;
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Land].RequestedDripRate), 0, data, i, 4); i += 4;
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Wind].RequestedDripRate), 0, data, i, 4); i += 4;
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Cloud].RequestedDripRate), 0, data, i, 4); i += 4;
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Task].RequestedDripRate), 0, data, i, 4); i += 4;
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Texture].RequestedDripRate), 0, data, i, 4); i += 4;
-                Buffer.BlockCopy(Utils.FloatToBytes((float)m_throttleCategories[(int)ThrottleOutPacketType.Asset].RequestedDripRate), 0, data, i, 4); i += 4;
+                // multiply by 8 to convert bytes back to bits
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Resend].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
+
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Land].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
+
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Wind].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
+
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Cloud].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
+
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Task].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
+
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Texture].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
+
+                rate = (float)m_throttleCategories[(int)ThrottleOutPacketType.Asset].RequestedDripRate * 8 * multiplier;
+                Buffer.BlockCopy(Utils.FloatToBytes(rate), 0, data, i, 4); i += 4;
 
                 m_packedThrottles = data;
             }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
index d08b25f..aff90c5 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
@@ -297,7 +297,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         delegate(IClientAPI client)
                         {
                             if (client is LLClientView)
-                                SendPacketData(((LLClientView)client).UDPClient, data, packet.Type, category);
+                                SendPacketData(((LLClientView)client).UDPClient, data, packet.Type, category, null);
                         }
                     );
                 }
@@ -309,7 +309,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     delegate(IClientAPI client)
                     {
                         if (client is LLClientView)
-                            SendPacketData(((LLClientView)client).UDPClient, data, packet.Type, category);
+                            SendPacketData(((LLClientView)client).UDPClient, data, packet.Type, category, null);
                     }
                 );
             }
@@ -322,7 +322,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="packet"></param>
         /// <param name="category"></param>
         /// <param name="allowSplitting"></param>
-        public void SendPacket(LLUDPClient udpClient, Packet packet, ThrottleOutPacketType category, bool allowSplitting)
+        public void SendPacket(LLUDPClient udpClient, Packet packet, ThrottleOutPacketType category, bool allowSplitting, UnackedPacketMethod method)
         {
             // CoarseLocationUpdate packets cannot be split in an automated way
             if (packet.Type == PacketType.CoarseLocationUpdate && allowSplitting)
@@ -339,13 +339,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 for (int i = 0; i < packetCount; i++)
                 {
                     byte[] data = datas[i];
-                    SendPacketData(udpClient, data, packet.Type, category);
+                    SendPacketData(udpClient, data, packet.Type, category, method);
                 }
             }
             else
             {
                 byte[] data = packet.ToBytes();
-                SendPacketData(udpClient, data, packet.Type, category);
+                SendPacketData(udpClient, data, packet.Type, category, method);
             }
         }
 
@@ -356,7 +356,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="data"></param>
         /// <param name="type"></param>
         /// <param name="category"></param>        
-        public void SendPacketData(LLUDPClient udpClient, byte[] data, PacketType type, ThrottleOutPacketType category)
+        public void SendPacketData(LLUDPClient udpClient, byte[] data, PacketType type, ThrottleOutPacketType category, UnackedPacketMethod method)
         {
             int dataLength = data.Length;
             bool doZerocode = (data[0] & Helpers.MSG_ZEROCODED) != 0;
@@ -411,7 +411,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             #region Queue or Send
 
-            OutgoingPacket outgoingPacket = new OutgoingPacket(udpClient, buffer, category);
+            OutgoingPacket outgoingPacket = new OutgoingPacket(udpClient, buffer, category, null);
+            // If we were not provided a method for handling unacked, use the UDPServer default method
+            outgoingPacket.UnackedMethod = ((method == null) ? delegate(OutgoingPacket oPacket) { ResendUnacked(oPacket); } : method);
 
             // If a Linden Lab 1.23.5 client receives an update packet after a kill packet for an object, it will 
             // continue to display the deleted object until relog.  Therefore, we need to always queue a kill object
@@ -445,7 +447,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 packet.Header.Reliable = false;
                 packet.Packets = blocks.ToArray();
 
-                SendPacket(udpClient, packet, ThrottleOutPacketType.Unknown, true);
+                SendPacket(udpClient, packet, ThrottleOutPacketType.Unknown, true, null);
             }
         }
 
@@ -458,17 +460,17 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             // We *could* get OldestUnacked, but it would hurt performance and not provide any benefit
             pc.PingID.OldestUnacked = 0;
 
-            SendPacket(udpClient, pc, ThrottleOutPacketType.Unknown, false);
+            SendPacket(udpClient, pc, ThrottleOutPacketType.Unknown, false, null);
         }
 
         public void CompletePing(LLUDPClient udpClient, byte pingID)
         {
             CompletePingCheckPacket completePing = new CompletePingCheckPacket();
             completePing.PingID.PingID = pingID;
-            SendPacket(udpClient, completePing, ThrottleOutPacketType.Unknown, false);
+            SendPacket(udpClient, completePing, ThrottleOutPacketType.Unknown, false, null);
         }
 
-        public void ResendUnacked(LLUDPClient udpClient)
+        public void HandleUnacked(LLUDPClient udpClient)
         {
             if (!udpClient.IsConnected)
                 return;
@@ -488,31 +490,29 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
             if (expiredPackets != null)
             {
-                //m_log.Debug("[LLUDPSERVER]: Resending " + expiredPackets.Count + " packets to " + udpClient.AgentID + ", RTO=" + udpClient.RTO);
-
+                //m_log.Debug("[LLUDPSERVER]: Handling " + expiredPackets.Count + " packets to " + udpClient.AgentID + ", RTO=" + udpClient.RTO);
                 // Exponential backoff of the retransmission timeout
                 udpClient.BackoffRTO();
+                for (int i = 0; i < expiredPackets.Count; ++i)
+                    expiredPackets[i].UnackedMethod(expiredPackets[i]);
+            }
+        }
 
-                // Resend packets
-                for (int i = 0; i < expiredPackets.Count; i++)
-                {
-                    OutgoingPacket outgoingPacket = expiredPackets[i];
-
-                    //m_log.DebugFormat("[LLUDPSERVER]: Resending packet #{0} (attempt {1}), {2}ms have passed",
-                    //    outgoingPacket.SequenceNumber, outgoingPacket.ResendCount, Environment.TickCount - outgoingPacket.TickCount);
+        public void ResendUnacked(OutgoingPacket outgoingPacket)
+        {
+            //m_log.DebugFormat("[LLUDPSERVER]: Resending packet #{0} (attempt {1}), {2}ms have passed",
+            //    outgoingPacket.SequenceNumber, outgoingPacket.ResendCount, Environment.TickCount - outgoingPacket.TickCount);
 
-                    // Set the resent flag
-                    outgoingPacket.Buffer.Data[0] = (byte)(outgoingPacket.Buffer.Data[0] | Helpers.MSG_RESENT);
-                    outgoingPacket.Category = ThrottleOutPacketType.Resend;
+            // Set the resent flag
+            outgoingPacket.Buffer.Data[0] = (byte)(outgoingPacket.Buffer.Data[0] | Helpers.MSG_RESENT);
+            outgoingPacket.Category = ThrottleOutPacketType.Resend;
 
-                    // Bump up the resend count on this packet
-                    Interlocked.Increment(ref outgoingPacket.ResendCount);
+            // Bump up the resend count on this packet
+            Interlocked.Increment(ref outgoingPacket.ResendCount);
 
-                    // Requeue or resend the packet
-                    if (!outgoingPacket.Client.EnqueueOutgoing(outgoingPacket, false))
-                        SendPacketFinal(outgoingPacket);
-                }
-            }
+            // Requeue or resend the packet
+            if (!outgoingPacket.Client.EnqueueOutgoing(outgoingPacket, false))
+                SendPacketFinal(outgoingPacket);
         }
 
         public void Flush(LLUDPClient udpClient)
@@ -672,7 +672,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             if (packet.Header.AppendedAcks && packet.Header.AckList != null)
             {
                 for (int i = 0; i < packet.Header.AckList.Length; i++)
-                    udpClient.NeedAcks.Remove(packet.Header.AckList[i], now, packet.Header.Resent);
+                    udpClient.NeedAcks.Acknowledge(packet.Header.AckList[i], now, packet.Header.Resent);
             }
 
             // Handle PacketAck packets
@@ -681,7 +681,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                 PacketAckPacket ackPacket = (PacketAckPacket)packet;
 
                 for (int i = 0; i < ackPacket.Packets.Length; i++)
-                    udpClient.NeedAcks.Remove(ackPacket.Packets[i].ID, now, packet.Header.Resent);
+                    udpClient.NeedAcks.Acknowledge(ackPacket.Packets[i].ID, now, packet.Header.Resent);
 
                 // We don't need to do anything else with PacketAck packets
                 return;
@@ -1096,7 +1096,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     if (udpClient.IsConnected)
                     {
                         if (m_resendUnacked)
-                            ResendUnacked(udpClient);
+                            HandleUnacked(udpClient);
 
                         if (m_sendAcks)
                             SendAcks(udpClient);
@@ -1152,7 +1152,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                             nticksUnack++;
                             watch2.Start();
 
-                            ResendUnacked(udpClient);
+                            HandleUnacked(udpClient);
 
                             watch2.Stop();
                             avgResendUnackedTicks = (nticksUnack - 1)/(float)nticksUnack * avgResendUnackedTicks + (watch2.ElapsedTicks / (float)nticksUnack);
diff --git a/OpenSim/Region/ClientStack/LindenUDP/OutgoingPacket.cs b/OpenSim/Region/ClientStack/LindenUDP/OutgoingPacket.cs
index 1a1a1cb..76c6c14 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/OutgoingPacket.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/OutgoingPacket.cs
@@ -31,6 +31,8 @@ using OpenMetaverse;
 
 namespace OpenSim.Region.ClientStack.LindenUDP
 {
+
+    public delegate void UnackedPacketMethod(OutgoingPacket oPacket);
     /// <summary>
     /// Holds a reference to the <seealso cref="LLUDPClient"/> this packet is
     /// destined for, along with the serialized packet data, sequence number
@@ -52,6 +54,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public int TickCount;
         /// <summary>Category this packet belongs to</summary>
         public ThrottleOutPacketType Category;
+        /// <summary>The delegate to be called if this packet is determined to be unacknowledged</summary>
+        public UnackedPacketMethod UnackedMethod;
 
         /// <summary>
         /// Default constructor
@@ -60,11 +64,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="buffer">Serialized packet data. If the flags or sequence number
         /// need to be updated, they will be injected directly into this binary buffer</param>
         /// <param name="category">Throttling category for this packet</param>
-        public OutgoingPacket(LLUDPClient client, UDPPacketBuffer buffer, ThrottleOutPacketType category)
+        public OutgoingPacket(LLUDPClient client, UDPPacketBuffer buffer, ThrottleOutPacketType category, UnackedPacketMethod method)
         {
             Client = client;
             Buffer = buffer;
             Category = category;
+            UnackedMethod = method;
         }
     }
 }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/ThrottleRates.cs b/OpenSim/Region/ClientStack/LindenUDP/ThrottleRates.cs
index aaf6e26..c9aac0b 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/ThrottleRates.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/ThrottleRates.cs
@@ -52,30 +52,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public int Texture;
         /// <summary>Drip rate for asset packets</summary>
         public int Asset;
-        /// <summary>Drip rate for state packets</summary>
-        public int State;
+
         /// <summary>Drip rate for the parent token bucket</summary>
         public int Total;
 
-        /// <summary>Maximum burst rate for resent packets</summary>
-        public int ResendLimit;
-        /// <summary>Maximum burst rate for land packets</summary>
-        public int LandLimit;
-        /// <summary>Maximum burst rate for wind packets</summary>
-        public int WindLimit;
-        /// <summary>Maximum burst rate for cloud packets</summary>
-        public int CloudLimit;
-        /// <summary>Maximum burst rate for task (state and transaction) packets</summary>
-        public int TaskLimit;
-        /// <summary>Maximum burst rate for texture packets</summary>
-        public int TextureLimit;
-        /// <summary>Maximum burst rate for asset packets</summary>
-        public int AssetLimit;
-        /// <summary>Maximum burst rate for state packets</summary>
-        public int StateLimit;
-        /// <summary>Burst rate for the parent token bucket</summary>
-        public int TotalLimit;
-
+        /// <summary>Flag used to enable adaptive throttles</summary>
+        public bool AdaptiveThrottlesEnabled;
+        
         /// <summary>
         /// Default constructor
         /// </summary>
@@ -86,26 +69,17 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 IConfig throttleConfig = config.Configs["ClientStack.LindenUDP"];
 
-                Resend = throttleConfig.GetInt("resend_default", 12500);
-                Land = throttleConfig.GetInt("land_default", 1000);
-                Wind = throttleConfig.GetInt("wind_default", 1000);
-                Cloud = throttleConfig.GetInt("cloud_default", 1000);
-                Task = throttleConfig.GetInt("task_default", 1000);
-                Texture = throttleConfig.GetInt("texture_default", 1000);
-                Asset = throttleConfig.GetInt("asset_default", 1000);
-                State = throttleConfig.GetInt("state_default", 1000);
-
-                ResendLimit = throttleConfig.GetInt("resend_limit", 18750);
-                LandLimit = throttleConfig.GetInt("land_limit", 29750);
-                WindLimit = throttleConfig.GetInt("wind_limit", 18750);
-                CloudLimit = throttleConfig.GetInt("cloud_limit", 18750);
-                TaskLimit = throttleConfig.GetInt("task_limit", 18750);
-                TextureLimit = throttleConfig.GetInt("texture_limit", 55750);
-                AssetLimit = throttleConfig.GetInt("asset_limit", 27500);
-                StateLimit = throttleConfig.GetInt("state_limit", 37000);
+                Resend = throttleConfig.GetInt("resend_default", 6625);
+                Land = throttleConfig.GetInt("land_default", 9125);
+                Wind = throttleConfig.GetInt("wind_default", 1750);
+                Cloud = throttleConfig.GetInt("cloud_default", 1750);
+                Task = throttleConfig.GetInt("task_default", 18500);
+                Texture = throttleConfig.GetInt("texture_default", 18500);
+                Asset = throttleConfig.GetInt("asset_default", 10500);
 
                 Total = throttleConfig.GetInt("client_throttle_max_bps", 0);
-                TotalLimit = Total;
+
+                AdaptiveThrottlesEnabled = throttleConfig.GetBoolean("enable_adaptive_throttles", false);
             }
             catch (Exception) { }
         }
@@ -128,34 +102,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     return Texture;
                 case ThrottleOutPacketType.Asset:
                     return Asset;
-                case ThrottleOutPacketType.State:
-                    return State;
-                case ThrottleOutPacketType.Unknown:
-                default:
-                    return 0;
-            }
-        }
-
-        public int GetLimit(ThrottleOutPacketType type)
-        {
-            switch (type)
-            {
-                case ThrottleOutPacketType.Resend:
-                    return ResendLimit;
-                case ThrottleOutPacketType.Land:
-                    return LandLimit;
-                case ThrottleOutPacketType.Wind:
-                    return WindLimit;
-                case ThrottleOutPacketType.Cloud:
-                    return CloudLimit;
-                case ThrottleOutPacketType.Task:
-                    return TaskLimit;
-                case ThrottleOutPacketType.Texture:
-                    return TextureLimit;
-                case ThrottleOutPacketType.Asset:
-                    return AssetLimit;
-                case ThrottleOutPacketType.State:
-                    return StateLimit;
                 case ThrottleOutPacketType.Unknown:
                 default:
                     return 0;
diff --git a/OpenSim/Region/ClientStack/LindenUDP/TokenBucket.cs b/OpenSim/Region/ClientStack/LindenUDP/TokenBucket.cs
index 07b0a1d..29fd1a4 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/TokenBucket.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/TokenBucket.cs
@@ -29,6 +29,8 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Reflection;
+using OpenSim.Framework;
+
 using log4net;
 
 namespace OpenSim.Region.ClientStack.LindenUDP
@@ -48,31 +50,31 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// Number of ticks (ms) per quantum, drip rate and max burst
         /// are defined over this interval.
         /// </summary>
-        private const Int32 m_ticksPerQuantum = 1000;
+        protected const Int32 m_ticksPerQuantum = 1000;
 
         /// <summary>
         /// This is the number of quantums worth of packets that can
         /// be accommodated during a burst
         /// </summary>
-        private const Double m_quantumsPerBurst = 1.5;
+        protected const Double m_quantumsPerBurst = 1.5;
                 
         /// <summary>
         /// </summary>
-        private const Int32 m_minimumDripRate = 1400;
+        protected const Int32 m_minimumDripRate = 1400;
         
         /// <summary>Time of the last drip, in system ticks</summary>
-        private Int32 m_lastDrip;
+        protected Int32 m_lastDrip;
 
         /// <summary>
         /// The number of bytes that can be sent at this moment. This is the
         /// current number of tokens in the bucket
         /// </summary>
-        private Int64 m_tokenCount;
+        protected Int64 m_tokenCount;
 
         /// <summary>
         /// Map of children buckets and their requested maximum burst rate
         /// </summary>
-        private Dictionary<TokenBucket,Int64> m_children = new Dictionary<TokenBucket,Int64>();
+        protected Dictionary<TokenBucket,Int64> m_children = new Dictionary<TokenBucket,Int64>();
         
 #region Properties
 
@@ -81,7 +83,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// parent. The parent bucket will limit the aggregate bandwidth of all
         /// of its children buckets
         /// </summary>
-        private TokenBucket m_parent;
+        protected TokenBucket m_parent;
         public TokenBucket Parent
         {
             get { return m_parent; }
@@ -93,7 +95,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// of tokens that can accumulate in the bucket at any one time. This 
         /// also sets the total request for leaf nodes
         /// </summary>
-        private Int64 m_burstRate;
+        protected Int64 m_burstRate;
         public Int64 RequestedBurstRate
         {
             get { return m_burstRate; }
@@ -118,8 +120,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <remarks>Tokens are added to the bucket any time 
         /// <seealso cref="RemoveTokens"/> is called, at the granularity of
         /// the system tick interval (typically around 15-22ms)</remarks>
-        private Int64 m_dripRate;
-        public Int64 RequestedDripRate
+        protected Int64 m_dripRate;
+        public virtual Int64 RequestedDripRate
         {
             get { return (m_dripRate == 0 ? m_totalDripRequest : m_dripRate); }
             set {
@@ -131,7 +133,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             }
         }
 
-        public Int64 DripRate
+        public virtual Int64 DripRate
         {
             get {
                 if (m_parent == null)
@@ -149,7 +151,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// The current total of the requested maximum burst rates of 
         /// this bucket's children buckets.
         /// </summary>
-        private Int64 m_totalDripRequest;
+        protected Int64 m_totalDripRequest;
         public Int64 TotalDripRequest 
             {
                 get { return m_totalDripRequest; }
@@ -177,7 +179,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             RequestedDripRate = dripRate;
             // TotalDripRequest = dripRate; // this will be overwritten when a child node registers
             // MaxBurst = (Int64)((double)dripRate * m_quantumsPerBurst);
-            m_lastDrip = Environment.TickCount & Int32.MaxValue;
+            m_lastDrip = Util.EnvironmentTickCount();
         }
 
 #endregion Constructor
@@ -189,7 +191,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// hierarchy. However, if any of the parents is over-booked, then
         /// the modifier will be less than 1.
         /// </summary>
-        private double DripRateModifier()
+        protected double DripRateModifier()
         {
             Int64 driprate = DripRate;
             return driprate >= TotalDripRequest ? 1.0 : (double)driprate / (double)TotalDripRequest;
@@ -197,7 +199,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         /// <summary>
         /// </summary>
-        private double BurstRateModifier()
+        protected double BurstRateModifier()
         {
             // for now... burst rate is always m_quantumsPerBurst (constant)
             // larger than drip rate so the ratio of burst requests is the
@@ -211,12 +213,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// </summary>
         public void RegisterRequest(TokenBucket child, Int64 request)
         {
-            m_children[child] = request;
-            // m_totalDripRequest = m_children.Values.Sum();
+            lock (m_children)
+            {
+                m_children[child] = request;
+                // m_totalDripRequest = m_children.Values.Sum();
 
-            m_totalDripRequest = 0;
-            foreach (KeyValuePair<TokenBucket, Int64> cref in m_children)
-                m_totalDripRequest += cref.Value;
+                m_totalDripRequest = 0;
+                foreach (KeyValuePair<TokenBucket, Int64> cref in m_children)
+                    m_totalDripRequest += cref.Value;
+            }
             
             // Pass the new values up to the parent
             if (m_parent != null)
@@ -229,12 +234,16 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// </summary>
         public void UnregisterRequest(TokenBucket child)
         {
-            m_children.Remove(child);
-            // m_totalDripRequest = m_children.Values.Sum();
+            lock (m_children)
+            {
+                m_children.Remove(child);
+                // m_totalDripRequest = m_children.Values.Sum();
 
-            m_totalDripRequest = 0;
-            foreach (KeyValuePair<TokenBucket, Int64> cref in m_children)
-                m_totalDripRequest += cref.Value;
+                m_totalDripRequest = 0;
+                foreach (KeyValuePair<TokenBucket, Int64> cref in m_children)
+                    m_totalDripRequest += cref.Value;
+            }
+            
 
             // Pass the new values up to the parent
             if (m_parent != null)
@@ -268,7 +277,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// Deposit tokens into the bucket from a child bucket that did
         /// not use all of its available tokens
         /// </summary>
-        private void Deposit(Int64 count)
+        protected void Deposit(Int64 count)
         {
             m_tokenCount += count;
 
@@ -285,7 +294,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// call to Drip
         /// </summary>
         /// <returns>True if tokens were added to the bucket, otherwise false</returns>
-        private void Drip()
+        protected void Drip()
         {
             // This should never happen... means we are a leaf node and were created
             // with no drip rate...
@@ -297,10 +306,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             
             // Determine the interval over which we are adding tokens, never add
             // more than a single quantum of tokens
-            Int32 now = Environment.TickCount & Int32.MaxValue;
-            Int32 deltaMS = Math.Min(now - m_lastDrip, m_ticksPerQuantum);
-
-            m_lastDrip = now;
+            Int32 deltaMS = Math.Min(Util.EnvironmentTickCountSubtract(m_lastDrip), m_ticksPerQuantum);
+            m_lastDrip = Util.EnvironmentTickCount();
 
             // This can be 0 in the very unusual case that the timer wrapped
             // It can be 0 if we try add tokens at a sub-tick rate
@@ -310,4 +317,77 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             Deposit(deltaMS * DripRate / m_ticksPerQuantum);
         }
     }
+
+    public class AdaptiveTokenBucket : TokenBucket
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        /// <summary>
+        /// The minimum rate for flow control. Minimum drip rate is one
+        /// packet per second. Open the throttle to 15 packets per second
+        /// or about 160kbps.
+        /// </summary>
+        protected const Int64 m_minimumFlow = m_minimumDripRate * 15;
+
+        // <summary>
+        // The maximum rate for flow control. Drip rate can never be
+        // greater than this.
+        // </summary>
+        protected Int64 m_maxDripRate = 0;
+        protected Int64 MaxDripRate
+        {
+            get { return (m_maxDripRate == 0 ? m_totalDripRequest : m_maxDripRate); }
+            set { m_maxDripRate = (value == 0 ? 0 : Math.Max(value,m_minimumFlow)); }
+        }
+        
+        private bool m_enabled = false;
+        
+        // <summary>
+        // 
+        // </summary>
+        public virtual Int64 AdjustedDripRate
+        {
+            get { return m_dripRate; }
+            set {
+                m_dripRate = OpenSim.Framework.Util.Clamp<Int64>(value,m_minimumFlow,MaxDripRate);
+                m_burstRate = (Int64)((double)m_dripRate * m_quantumsPerBurst);
+                if (m_parent != null)
+                    m_parent.RegisterRequest(this,m_dripRate);
+            }
+        }
+
+        // <summary>
+        // 
+        // </summary>
+        public AdaptiveTokenBucket(TokenBucket parent, Int64 maxDripRate, bool enabled) : base(parent,maxDripRate)
+        {
+            m_enabled = enabled;
+
+            if (m_enabled)
+            {
+                // m_log.DebugFormat("[TOKENBUCKET] Adaptive throttle enabled");
+                MaxDripRate = maxDripRate;
+                AdjustedDripRate = m_minimumFlow;
+            }
+        }
+                
+        // <summary>
+        // 
+        // </summary>
+        public void ExpirePackets(Int32 count)
+        {
+            // m_log.WarnFormat("[ADAPTIVEBUCKET] drop {0} by {1} expired packets",AdjustedDripRate,count);
+            if (m_enabled)
+                AdjustedDripRate = (Int64) (AdjustedDripRate / Math.Pow(2,count));
+        }
+
+        // <summary>
+        // 
+        // </summary>
+        public void AcknowledgePackets(Int32 count)
+        {
+            if (m_enabled)
+                AdjustedDripRate = AdjustedDripRate + count;
+        }
+    }
 }
diff --git a/OpenSim/Region/ClientStack/LindenUDP/UnackedPacketCollection.cs b/OpenSim/Region/ClientStack/LindenUDP/UnackedPacketCollection.cs
index d195110..793aefe 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/UnackedPacketCollection.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/UnackedPacketCollection.cs
@@ -65,7 +65,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <summary>Holds packets that need to be added to the unacknowledged list</summary>
         private LocklessQueue<OutgoingPacket> m_pendingAdds = new LocklessQueue<OutgoingPacket>();
         /// <summary>Holds information about pending acknowledgements</summary>
-        private LocklessQueue<PendingAck> m_pendingRemoves = new LocklessQueue<PendingAck>();
+        private LocklessQueue<PendingAck> m_pendingAcknowledgements = new LocklessQueue<PendingAck>();
+        /// <summary>Holds information about pending removals</summary>
+        private LocklessQueue<uint> m_pendingRemoves = new LocklessQueue<uint>();
 
         /// <summary>
         /// Add an unacked packet to the collection
@@ -83,15 +85,33 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
         /// <summary>
         /// Marks a packet as acknowledged
+        /// This method is used when an acknowledgement is received from the network for a previously
+        /// sent packet. Effects of removal this way are to update unacked byte count, adjust RTT
+        /// and increase throttle to the coresponding client.
         /// </summary>
         /// <param name="sequenceNumber">Sequence number of the packet to
         /// acknowledge</param>
         /// <param name="currentTime">Current value of Environment.TickCount</param>
         /// <remarks>This does not immediately acknowledge the packet, it only
         /// queues the ack so it can be handled in a thread-safe way later</remarks>
-        public void Remove(uint sequenceNumber, int currentTime, bool fromResend)
+        public void Acknowledge(uint sequenceNumber, int currentTime, bool fromResend)
         {
-            m_pendingRemoves.Enqueue(new PendingAck(sequenceNumber, currentTime, fromResend));
+            m_pendingAcknowledgements.Enqueue(new PendingAck(sequenceNumber, currentTime, fromResend));
+        }
+
+        /// <summary>
+        /// Marks a packet as no longer needing acknowledgement without a received acknowledgement.
+        /// This method is called when a packet expires and we no longer need an acknowledgement.
+        /// When some reliable packet types expire, they are handled in a way other than simply 
+        /// resending them. The only effect of removal this way is to update unacked byte count.
+        /// </summary>
+        /// <param name="sequenceNumber">Sequence number of the packet to
+        /// acknowledge</param>
+        /// <remarks>The does not immediately remove the packet, it only queues the removal
+        /// so it can be handled in a thread safe way later</remarks>
+        public void Remove(uint sequenceNumber)
+        {
+            m_pendingRemoves.Enqueue(sequenceNumber);
         }
 
         /// <summary>
@@ -130,6 +150,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         // is actually sent out again
                         packet.TickCount = 0;
 
+                        // As with other network applications, assume that an expired packet is
+                        // an indication of some network problem, slow transmission
+                        packet.Client.FlowThrottle.ExpirePackets(1);
+                        
                         expiredPackets.Add(packet);
                     }
                 }
@@ -147,29 +171,49 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     m_packets[pendingAdd.SequenceNumber] = pendingAdd;
             
             // Process all the pending removes, including updating statistics and round-trip times
-            PendingAck pendingRemove;
-            OutgoingPacket ackedPacket;
-            while (m_pendingRemoves.TryDequeue(out pendingRemove))
+            PendingAck pendingAcknowledgement;
+            while (m_pendingAcknowledgements.TryDequeue(out pendingAcknowledgement))
             {
-                if (m_packets.TryGetValue(pendingRemove.SequenceNumber, out ackedPacket))
+                OutgoingPacket ackedPacket;
+                if (m_packets.TryGetValue(pendingAcknowledgement.SequenceNumber, out ackedPacket))
                 {
                     if (ackedPacket != null)
                     {
-                        m_packets.Remove(pendingRemove.SequenceNumber);
+                        m_packets.Remove(pendingAcknowledgement.SequenceNumber);
+
+                        // As with other network applications, assume that an acknowledged packet is an
+                        // indication that the network can handle a little more load, speed up the transmission
+                        ackedPacket.Client.FlowThrottle.AcknowledgePackets(ackedPacket.Buffer.DataLength);
 
                         // Update stats
                         Interlocked.Add(ref ackedPacket.Client.UnackedBytes, -ackedPacket.Buffer.DataLength);
 
-                        if (!pendingRemove.FromResend)
+                        if (!pendingAcknowledgement.FromResend)
                         {
                             // Calculate the round-trip time for this packet and its ACK
-                            int rtt = pendingRemove.RemoveTime - ackedPacket.TickCount;
+                            int rtt = pendingAcknowledgement.RemoveTime - ackedPacket.TickCount;
                             if (rtt > 0)
                                 ackedPacket.Client.UpdateRoundTrip(rtt);
                         }
                     }
                 }
             }
+
+            uint pendingRemove;
+            while(m_pendingRemoves.TryDequeue(out pendingRemove))
+            {
+                OutgoingPacket removedPacket;
+                if (m_packets.TryGetValue(pendingRemove, out removedPacket))
+                {
+                    if (removedPacket != null)
+                    {
+                        m_packets.Remove(pendingRemove);
+
+                        // Update stats
+                        Interlocked.Add(ref removedPacket.Client.UnackedBytes, -removedPacket.Buffer.DataLength);
+                    }
+                }
+            }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/OpenSim/Region/CoreModules/Agent/AssetTransaction/AgentAssetsTransactions.cs b/OpenSim/Region/CoreModules/Agent/AssetTransaction/AgentAssetsTransactions.cs
index 771038e..9d8082b 100644
--- a/OpenSim/Region/CoreModules/Agent/AssetTransaction/AgentAssetsTransactions.cs
+++ b/OpenSim/Region/CoreModules/Agent/AssetTransaction/AgentAssetsTransactions.cs
@@ -41,8 +41,7 @@ namespace OpenSim.Region.CoreModules.Agent.AssetTransaction
     /// </summary>
     public class AgentAssetTransactions
     {
-//        private static readonly ILog m_log = LogManager.GetLogger(
-//                MethodBase.GetCurrentMethod().DeclaringType);
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         // Fields
         private bool m_dumpAssetsToFile;
@@ -149,6 +148,10 @@ namespace OpenSim.Region.CoreModules.Agent.AssetTransaction
 
                 if (asset != null)
                 {
+//                    m_log.DebugFormat(
+//                        "[AGENT ASSETS TRANSACTIONS]: Updating item {0} in {1} for transaction {2}", 
+//                        item.Name, part.Name, transactionID);
+                    
                     asset.FullID = UUID.Random();
                     asset.Name = item.Name;
                     asset.Description = item.Description;
@@ -156,8 +159,6 @@ namespace OpenSim.Region.CoreModules.Agent.AssetTransaction
                     item.AssetID = asset.FullID;
 
                     m_Scene.AssetService.Store(asset);
-
-                    part.Inventory.UpdateInventoryItem(item);
                 }
             }
         }
diff --git a/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs b/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
index ff26264..520d794 100644
--- a/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
@@ -562,14 +562,13 @@ namespace OpenSim.Region.CoreModules.Avatar.Attachments
         /// <param name="sp"></param>
         /// <param name="so"></param>
         /// <param name="attachmentpoint"></param>
-        /// <param name="AttachOffset"></param>
+        /// <param name="attachOffset"></param>
         /// <param name="silent"></param>
-        protected void AttachToAgent(ScenePresence avatar, SceneObjectGroup so, uint attachmentpoint, Vector3 AttachOffset, bool silent)
+        protected void AttachToAgent(ScenePresence avatar, SceneObjectGroup so, uint attachmentpoint, Vector3 attachOffset, bool silent)
         {
-            // don't attach attachments to child agents
-            if (avatar.IsChildAgent) return;
 
-//                m_log.DebugFormat("[ATTACHMENTS MODULE]: Adding attachment {0} to avatar {1}", Name, avatar.Name);
+            m_log.DebugFormat("[ATTACHMENTS MODULE]: Adding attachment {0} to avatar {1} in pt {2} pos {3} {4}", Name, avatar.Name,
+                attachmentpoint, attachOffset, so.RootPart.AttachedPos);
                               
             so.DetachFromBackup();
 
@@ -590,8 +589,8 @@ namespace OpenSim.Region.CoreModules.Avatar.Attachments
                 so.RootPart.PhysActor = null;
             }
 
-            so.AbsolutePosition = AttachOffset;
-            so.RootPart.AttachedPos = AttachOffset;
+            so.AbsolutePosition = attachOffset;
+            so.RootPart.AttachedPos = attachOffset;
             so.RootPart.IsAttachment = true;
 
             so.RootPart.SetParentLocalId(avatar.LocalId);
diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index c88be7d..b985fbb 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -285,11 +285,13 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 }
 
                 string reason;
-                if (!m_aScene.SimulationService.QueryAccess(finalDestination, sp.ControllingClient.AgentId, Vector3.Zero, out reason))
+                string version;
+                if (!m_aScene.SimulationService.QueryAccess(finalDestination, sp.ControllingClient.AgentId, Vector3.Zero, out version, out reason))
                 {
                     sp.ControllingClient.SendTeleportFailed("Teleport failed: " + reason);
                     return;
                 }
+                m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Destination is running version {0}", version);
 
                 sp.ControllingClient.SendTeleportStart(teleportFlags);
 
@@ -371,20 +373,6 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     capsPath = finalDestination.ServerURI + CapsUtil.GetCapsSeedPath(agentCircuit.CapsPath);
                 }
 
-                // Expect avatar crossing is a heavy-duty function at the destination.
-                // That is where MakeRoot is called, which fetches appearance and inventory.
-                // Plus triggers OnMakeRoot, which spawns a series of asynchronous updates.
-                //m_commsProvider.InterRegion.ExpectAvatarCrossing(reg.RegionHandle, avatar.ControllingClient.AgentId,
-                //                                                      position, false);
-
-                //{
-                //    avatar.ControllingClient.SendTeleportFailed("Problem with destination.");
-                //    // We should close that agent we just created over at destination...
-                //    List<ulong> lst = new List<ulong>();
-                //    lst.Add(reg.RegionHandle);
-                //    SendCloseChildAgentAsync(avatar.UUID, lst);
-                //    return;
-                //}
 
                 SetInTransit(sp.UUID);
 
@@ -426,7 +414,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
                 // TeleportFinish makes the client send CompleteMovementIntoRegion (at the destination), which
                 // trigers a whole shebang of things there, including MakeRoot. So let's wait for confirmation
-                // that the client contacted the destination before we send the attachments and close things here.
+                // that the client contacted the destination before we close things here.
                 if (!WaitForCallback(sp.UUID))
                 {
                     m_log.WarnFormat(
@@ -437,14 +425,20 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     return;
                 }
 
-                // CrossAttachmentsIntoNewRegion is a synchronous call. We shouldn't need to wait after it
-                CrossAttachmentsIntoNewRegion(finalDestination, sp, true);
+                // For backwards compatibility
+                if (version == "Unknown" || version == string.Empty)
+                {
+                    // CrossAttachmentsIntoNewRegion is a synchronous call. We shouldn't need to wait after it
+                    m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Old simulator, sending attachments one by one...");
+                    CrossAttachmentsIntoNewRegion(finalDestination, sp, true);
+                }
+
+                // May need to logout or other cleanup
+                AgentHasMovedAway(sp, logout);
 
                 // Well, this is it. The agent is over there.
                 KillEntity(sp.Scene, sp.LocalId);
 
-                // May need to logout or other cleanup
-                AgentHasMovedAway(sp.ControllingClient.SessionId, logout);
 
                 // Now let's make it officially a child agent
                 sp.MakeChildAgent();
@@ -485,7 +479,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
             // Fail. Reset it back
             sp.IsChildAgent = false;
-
+            ReInstantiateScripts(sp);
             ResetFromTransit(sp.UUID);
 
             EnableChildAgents(sp);
@@ -513,8 +507,13 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
         }
 
-        protected virtual void AgentHasMovedAway(UUID sessionID, bool logout)
+        protected virtual void AgentHasMovedAway(ScenePresence sp, bool logout)
         {
+            foreach (SceneObjectGroup sop in sp.Attachments)
+            {
+                sop.Scene.DeleteSceneObject(sop, true);
+            }
+            sp.Attachments.Clear();
         }
 
         protected void KillEntity(Scene scene, uint localID)
@@ -784,7 +783,8 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             GridRegion neighbourRegion = scene.GridService.GetRegionByPosition(scene.RegionInfo.ScopeID, (int)x, (int)y);
 
             string reason;
-            if (!scene.SimulationService.QueryAccess(neighbourRegion, agent.ControllingClient.AgentId, newpos, out reason))
+            string version;
+            if (!scene.SimulationService.QueryAccess(neighbourRegion, agent.ControllingClient.AgentId, newpos, out version, out reason))
             {
                 agent.ControllingClient.SendAlertMessage("Cannot region cross into banned parcel");
                 if (r == null)
@@ -804,7 +804,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             agent.InTransit();
 
             CrossAgentToNewRegionDelegate d = CrossAgentToNewRegionAsync;
-            d.BeginInvoke(agent, newpos, neighbourx, neighboury, neighbourRegion, isFlying, CrossAgentToNewRegionCompleted, d);
+            d.BeginInvoke(agent, newpos, neighbourx, neighboury, neighbourRegion, isFlying, version, CrossAgentToNewRegionCompleted, d);
 
             return true;
         }
@@ -861,17 +861,17 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             icon.EndInvoke(iar);
         }
 
-        public delegate ScenePresence CrossAgentToNewRegionDelegate(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion, bool isFlying);
+        public delegate ScenePresence CrossAgentToNewRegionDelegate(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion, bool isFlying, string version);
 
         /// <summary>
         /// This Closes child agents on neighbouring regions
         /// Calls an asynchronous method to do so..  so it doesn't lag the sim.
         /// </summary>
-        protected ScenePresence CrossAgentToNewRegionAsync(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion, bool isFlying)
+        protected ScenePresence CrossAgentToNewRegionAsync(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion, bool isFlying, string version)
         {
             ulong neighbourHandle = Utils.UIntsToLong((uint)(neighbourx * Constants.RegionSize), (uint)(neighboury * Constants.RegionSize));
 
-            m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Crossing agent {0} {1} to {2}-{3}", agent.Firstname, agent.Lastname, neighbourx, neighboury);
+            m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Crossing agent {0} {1} to {2}-{3} running version {4}", agent.Firstname, agent.Lastname, neighbourx, neighboury, version);
 
             Scene m_scene = agent.Scene;
 
@@ -930,6 +930,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 if (!WaitForCallback(agent.UUID))
                 {
                     m_log.Debug("[ENTITY TRANSFER MODULE]: Callback never came in crossing agent");
+                    ReInstantiateScripts(agent);
                     ResetFromTransit(agent.UUID);
 
                     // Yikes! We should just have a ref to scene here.
@@ -945,7 +946,14 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 agent.SendOtherAgentsAvatarDataToMe();
                 agent.SendOtherAgentsAppearanceToMe();
 
-                CrossAttachmentsIntoNewRegion(neighbourRegion, agent, true);
+                // Backwards compatibility
+                if (version == "Unknown" || version == string.Empty)
+                {
+                    m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Old neighbor, passing attachments one by one...");
+                    CrossAttachmentsIntoNewRegion(neighbourRegion, agent, true);
+                }
+
+                AgentHasMovedAway(agent, false);
 
                 // the user may change their profile information in other region,
                 // so the userinfo in UserProfileCache is not reliable any more, delete it
@@ -1749,7 +1757,14 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             return false;
         }
 
-
+        protected void ReInstantiateScripts(ScenePresence sp)
+        {
+            sp.Attachments.ForEach(delegate(SceneObjectGroup sog)
+            {
+                sog.CreateScriptInstances(0, false, sp.Scene.DefaultScriptEngine, 0);
+                sog.ResumeScripts();
+            });
+        }
         #endregion
 
     }
diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/HGEntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/HGEntityTransferModule.cs
index 79e76b4..5c53f78 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/HGEntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/HGEntityTransferModule.cs
@@ -142,11 +142,12 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             return false;
         }
 
-        protected override void AgentHasMovedAway(UUID sessionID, bool logout)
+        protected override void AgentHasMovedAway(ScenePresence sp, bool logout)
         {
+            base.AgentHasMovedAway(sp, logout);
             if (logout)
                 // Log them out of this grid
-                m_aScene.PresenceService.LogoutAgent(sessionID);
+                m_aScene.PresenceService.LogoutAgent(sp.ControllingClient.SessionId);
         }
 
         protected override bool CreateAgent(ScenePresence sp, GridRegion reg, GridRegion finalDestination, AgentCircuitData agentCircuit, uint teleportFlags, out string reason, out bool logout)
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs
index a298b65..2cf02b5 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs
@@ -41,6 +41,9 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
     public class LocalSimulationConnectorModule : ISharedRegionModule, ISimulationService
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        // Version of this service
+        private const string m_Version = "SIMULATION/0.1";
+
         private List<Scene> m_sceneList = new List<Scene>();
 
         private IEntityTransferModule m_AgentTransferModule;
@@ -257,9 +260,10 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
             return false;
         }
 
-        public bool QueryAccess(GridRegion destination, UUID id, Vector3 position, out string reason)
+        public bool QueryAccess(GridRegion destination, UUID id, Vector3 position, out string version, out string reason)
         {
             reason = "Communications failure";
+            version = m_Version;
             if (destination == null)
                 return false;
 
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs
index 67f4d60..f8cea71 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs
@@ -179,7 +179,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
                 return true;
 
             // else do the remote thing
-            if (!m_localBackend.IsLocalRegion(destination.RegionHandle))
+            if (!m_localBackend.IsLocalRegion(destination.RegionID))
             {
                 return m_remoteConnector.CreateAgent(destination, aCircuit, teleportFlags, out reason);
             }
@@ -229,19 +229,20 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
 
         }
 
-        public bool QueryAccess(GridRegion destination, UUID id, Vector3 position, out string reason)
+        public bool QueryAccess(GridRegion destination, UUID id, Vector3 position, out string version, out string reason)
         {
             reason = "Communications failure";
+            version = "Unknown";
             if (destination == null)
                 return false;
 
             // Try local first
-            if (m_localBackend.QueryAccess(destination, id, position, out reason))
+            if (m_localBackend.QueryAccess(destination, id, position, out version, out reason))
                 return true;
 
             // else do the remote thing
-            if (!m_localBackend.IsLocalRegion(destination.RegionHandle))
-                return m_remoteConnector.QueryAccess(destination, id, position, out reason);
+            if (!m_localBackend.IsLocalRegion(destination.RegionID))
+                return m_remoteConnector.QueryAccess(destination, id, position, out version, out reason);
 
             return false;
 
diff --git a/OpenSim/Region/Framework/Scenes/Prioritizer.cs b/OpenSim/Region/Framework/Scenes/Prioritizer.cs
index e3ed905..4595a29 100644
--- a/OpenSim/Region/Framework/Scenes/Prioritizer.cs
+++ b/OpenSim/Region/Framework/Scenes/Prioritizer.cs
@@ -119,16 +119,40 @@ namespace OpenSim.Region.Framework.Scenes
 
         private uint GetPriorityByTime(IClientAPI client, ISceneEntity entity)
         {
-            return 1;
+            // And anything attached to this avatar gets top priority as well
+            if (entity is SceneObjectPart)
+            {
+                SceneObjectPart sop = (SceneObjectPart)entity;
+                if (sop.ParentGroup.RootPart.IsAttachment && client.AgentId == sop.ParentGroup.RootPart.AttachedAvatar)
+                    return 1;
+            }
+
+            return PriorityQueue.NumberOfImmediateQueues; // first queue past the immediate queues
         }
 
         private uint GetPriorityByDistance(IClientAPI client, ISceneEntity entity)
         {
+            // And anything attached to this avatar gets top priority as well
+            if (entity is SceneObjectPart)
+            {
+                SceneObjectPart sop = (SceneObjectPart)entity;
+                if (sop.ParentGroup.RootPart.IsAttachment && client.AgentId == sop.ParentGroup.RootPart.AttachedAvatar)
+                    return 1;
+            }
+
             return ComputeDistancePriority(client,entity,false);
         }
         
         private uint GetPriorityByFrontBack(IClientAPI client, ISceneEntity entity)
         {
+            // And anything attached to this avatar gets top priority as well
+            if (entity is SceneObjectPart)
+            {
+                SceneObjectPart sop = (SceneObjectPart)entity;
+                if (sop.ParentGroup.RootPart.IsAttachment && client.AgentId == sop.ParentGroup.RootPart.AttachedAvatar)
+                    return 1;
+            }
+
             return ComputeDistancePriority(client,entity,true);
         }
 
@@ -141,18 +165,20 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 if (!presence.IsChildAgent)
                 {
+                    // All avatars other than our own go into pqueue 1
+                    if (entity is ScenePresence)
+                        return 1;
+                    
                     if (entity is SceneObjectPart)
                     {
+                        // Attachments are high priority, 
+                        if (((SceneObjectPart)entity).ParentGroup.RootPart.IsAttachment)
+                            return 1;
+
                         // Non physical prims are lower priority than physical prims
                         PhysicsActor physActor = ((SceneObjectPart)entity).ParentGroup.RootPart.PhysActor;
                         if (physActor == null || !physActor.IsPhysical)
                             pqueue++;
-
-                        // Attachments are high priority, 
-                        // MIC: shouldn't these already be in the highest priority queue already
-                        // since their root position is same as the avatars?
-                        if (((SceneObjectPart)entity).ParentGroup.RootPart.IsAttachment)
-                            pqueue = 1;
                     }
                 }
             }
@@ -172,7 +198,7 @@ namespace OpenSim.Region.Framework.Scenes
 
                 // m_log.WarnFormat("[PRIORITIZER] attempt to use agent {0} not in the scene",client.AgentId);
                 // throw new InvalidOperationException("Prioritization agent not defined");
-                return Int32.MaxValue;
+                return PriorityQueue.NumberOfQueues - 1;
             }
                 
             // Use group position for child prims, since we are putting child prims in
@@ -197,8 +223,10 @@ namespace OpenSim.Region.Framework.Scenes
 
             // And convert the distance to a priority queue, this computation gives queues
             // at 10, 20, 40, 80, 160, 320, 640, and 1280m
-            uint pqueue = 1;
-            for (int i = 0; i < 8; i++)
+            uint pqueue = PriorityQueue.NumberOfImmediateQueues;
+            uint queues = PriorityQueue.NumberOfQueues - PriorityQueue.NumberOfImmediateQueues;
+            
+            for (int i = 0; i < queues - 1; i++)
             {
                 if (distance < 10 * Math.Pow(2.0,i))
                     break;
diff --git a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
index 0f85925..b0f0de6 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
@@ -1430,6 +1430,10 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 else // Updating existing item with new perms etc
                 {
+//                    m_log.DebugFormat(
+//                        "[PRIM INVENTORY]: Updating item {0} in {1} for UpdateTaskInventory()", 
+//                        currentItem.Name, part.Name);
+                    
                     IAgentAssetTransactions agentTransactions = this.RequestModuleInterface<IAgentAssetTransactions>();
                     if (agentTransactions != null)
                     {
@@ -2039,6 +2043,12 @@ namespace OpenSim.Region.Framework.Scenes
             if (rot != null)
                 group.UpdateGroupRotationR((Quaternion)rot);
             
+            // TODO: This needs to be refactored with the similar code in 
+            // SceneGraph.AddNewSceneObject(SceneObjectGroup sceneObject, bool attachToBackup, Vector3 pos, Quaternion rot, Vector3 vel)
+            // possibly by allowing this method to take a null rotation.
+            if (group.RootPart.PhysActor != null && group.RootPart.PhysActor.IsPhysical && vel != Vector3.Zero)
+                group.RootPart.ApplyImpulse((vel * group.GetMass()), false);
+            
             // We can only call this after adding the scene object, since the scene object references the scene
             // to find out if scripts should be activated at all.
             group.CreateScriptInstances(param, true, DefaultScriptEngine, 3);
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 01de824..7c5e246 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -1229,7 +1229,6 @@ namespace OpenSim.Region.Framework.Scenes
 
             // Increment the frame counter
             ++Frame;
-
             try
             {
                 // Check if any objects have reached their targets
@@ -2316,7 +2315,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// <returns></returns>
         public bool IncomingCreateObject(ISceneObject sog)
         {
-            //m_log.Debug(" >>> IncomingCreateObject(sog) <<< " + ((SceneObjectGroup)sog).AbsolutePosition + " deleted? " + ((SceneObjectGroup)sog).IsDeleted);
+            //m_log.DebugFormat(" >>> IncomingCreateObject(sog) <<< {0} deleted? {1} isAttach? {2}", ((SceneObjectGroup)sog).AbsolutePosition,
+            //    ((SceneObjectGroup)sog).IsDeleted, ((SceneObjectGroup)sog).RootPart.IsAttachment);
+
             SceneObjectGroup newObject;
             try
             {
@@ -2334,9 +2335,29 @@ namespace OpenSim.Region.Framework.Scenes
                 return false;
             }
 
-            newObject.RootPart.ParentGroup.CreateScriptInstances(0, false, DefaultScriptEngine, GetStateSource(newObject));
-
-            newObject.ResumeScripts();
+            // For attachments, we need to wait until the agent is root
+            // before we restart the scripts, or else some functions won't work.
+            if (!newObject.IsAttachment)
+            {
+                newObject.RootPart.ParentGroup.CreateScriptInstances(0, false, DefaultScriptEngine, GetStateSource(newObject));
+                newObject.ResumeScripts();
+            }
+            else
+            {
+                ScenePresence sp;
+                if (TryGetScenePresence(newObject.OwnerID, out sp))
+                {
+                    // If the scene presence is here and already a root
+                    // agent, we came from a ;egacy region. Start the scripts
+                    // here as they used to start.
+                    // TODO: Remove in 0.7.3
+                    if (!sp.IsChildAgent)
+                    {
+                        newObject.RootPart.ParentGroup.CreateScriptInstances(0, false, DefaultScriptEngine, GetStateSource(newObject));
+                        newObject.ResumeScripts();
+                    }
+                }
+            }
 
             // Do this as late as possible so that listeners have full access to the incoming object
             EventManager.TriggerOnIncomingSceneObject(newObject);
@@ -2453,17 +2474,8 @@ namespace OpenSim.Region.Framework.Scenes
             ScenePresence sp = GetScenePresence(sog.OwnerID);
 
             if (sp != null)
-            {
-                AgentCircuitData aCircuit = m_authenticateHandler.GetAgentCircuitData(sp.UUID);
+                return sp.GetStateSource();
 
-                if (aCircuit != null && (aCircuit.teleportFlags != (uint)TeleportFlags.Default))
-                {
-                    // This will get your attention
-                    //m_log.Error("[XXX] Triggering CHANGED_TELEPORT");
-
-                    return 5; // StateSource.Teleporting
-                }
-            }
             return 2; // StateSource.PrimCrossing
         }
 
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
index 3281eab..3b60f8c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
@@ -693,8 +693,9 @@ namespace OpenSim.Region.Framework.Scenes
         {
             TaskInventoryItem it = GetInventoryItem(item.ItemID);
             if (it != null)
-
             {
+//                m_log.DebugFormat("[PRIM INVENTORY]: Updating item {0} in {1}", item.Name, m_part.Name);
+                
                 item.ParentID = m_part.UUID;
                 item.ParentPartID = m_part.UUID;
 
@@ -711,14 +712,16 @@ namespace OpenSim.Region.Framework.Scenes
                     m_items[item.ItemID] = item;
                     m_inventorySerial++;
                 }
-
+                
                 if (fireScriptEvents)
                     m_part.TriggerScriptChangedEvent(Changed.INVENTORY);
+                
                 if (considerChanged)
                 {
                     HasInventoryChanged = true;
                     m_part.ParentGroup.HasGroupChanged = true;
                 }
+                
                 return true;
             }
             else
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index 00a1487..5b86735 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -840,6 +840,9 @@ namespace OpenSim.Region.Framework.Scenes
 
             //m_log.DebugFormat("[SCENE]: known regions in {0}: {1}", Scene.RegionInfo.RegionName, KnownChildRegionHandles.Count);
 
+            bool wasChild = m_isChildAgent;
+            m_isChildAgent = false;
+
             IGroupsModule gm = m_scene.RequestModuleInterface<IGroupsModule>();
             if (gm != null)
                 m_grouptitle = gm.GetGroupTitle(m_uuid);
@@ -929,14 +932,21 @@ namespace OpenSim.Region.Framework.Scenes
             // Animator.SendAnimPack();
 
             m_scene.SwapRootAgentCount(false);
-            
-            //CachedUserInfo userInfo = m_scene.CommsManager.UserProfileCacheService.GetUserDetails(m_uuid);
-            //if (userInfo != null)
-            //        userInfo.FetchInventory();
-            //else
-            //    m_log.ErrorFormat("[SCENE]: Could not find user info for {0} when making it a root agent", m_uuid);
-            
-            m_isChildAgent = false;
+
+            // The initial login scene presence is already root when it gets here
+            // and it has already rezzed the attachments and started their scripts.
+            // We do the following only for non-login agents, because their scripts
+            // haven't started yet.
+            if (wasChild && Attachments != null && Attachments.Count > 0)
+            {
+                m_log.DebugFormat("[SCENE PRESENCE]: Restarting scripts in attachments...");
+                // Resume scripts
+                Attachments.ForEach(delegate(SceneObjectGroup sog)
+                {
+                    sog.RootPart.ParentGroup.CreateScriptInstances(0, false, m_scene.DefaultScriptEngine, GetStateSource());
+                    sog.ResumeScripts();
+                });
+            }
 
             // send the animations of the other presences to me
             m_scene.ForEachScenePresence(delegate(ScenePresence presence)
@@ -948,6 +958,20 @@ namespace OpenSim.Region.Framework.Scenes
             m_scene.EventManager.TriggerOnMakeRootAgent(this);
         }
 
+        public int GetStateSource()
+        {
+            AgentCircuitData aCircuit = m_scene.AuthenticateHandler.GetAgentCircuitData(UUID);
+
+            if (aCircuit != null && (aCircuit.teleportFlags != (uint)TeleportFlags.Default))
+            {
+                // This will get your attention
+                //m_log.Error("[XXX] Triggering CHANGED_TELEPORT");
+
+                return 5; // StateSource.Teleporting
+            }
+            return 2; // StateSource.PrimCrossing
+        }
+
         /// <summary>
         /// This turns a root agent into a child agent
         /// when an agent departs this region for a neighbor, this gets called.
@@ -1139,7 +1163,6 @@ namespace OpenSim.Region.Framework.Scenes
                 AbsolutePosition = pos;
             }
 
-            m_isChildAgent = false;
             bool m_flying = ((m_AgentControlFlags & AgentManager.ControlFlags.AGENT_CONTROL_FLY) != 0);
             MakeRootAgent(AbsolutePosition, m_flying);
 
@@ -2340,12 +2363,14 @@ namespace OpenSim.Region.Framework.Scenes
 
         #region Update Client(s)
 
+
         /// <summary>
         /// Sends a location update to the client connected to this scenePresence
         /// </summary>
         /// <param name="remoteClient"></param>
         public void SendTerseUpdateToClient(IClientAPI remoteClient)
         {
+
             // If the client is inactive, it's getting its updates from another
             // server.
             if (remoteClient.IsActive)
@@ -2358,8 +2383,8 @@ namespace OpenSim.Region.Framework.Scenes
                 //m_log.DebugFormat("[SCENEPRESENCE]: TerseUpdate: Pos={0} Rot={1} Vel={2}", m_pos, m_bodyRot, m_velocity);
 
                 remoteClient.SendPrimUpdate(
-                    this, 
-                    PrimUpdateFlags.Position | PrimUpdateFlags.Rotation | PrimUpdateFlags.Velocity 
+                    this,
+                    PrimUpdateFlags.Position | PrimUpdateFlags.Rotation | PrimUpdateFlags.Velocity
                     | PrimUpdateFlags.Acceleration | PrimUpdateFlags.AngularVelocity);
 
                 m_scene.StatsReporter.AddAgentTime(Util.EnvironmentTickCountSubtract(m_perfMonMS));
@@ -2367,16 +2392,31 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
+
+        // vars to support reduced update frequency when velocity is unchanged
+        private Vector3 lastVelocitySentToAllClients = Vector3.Zero;
+        private int lastTerseUpdateToAllClientsTick = Util.EnvironmentTickCount();
+
         /// <summary>
         /// Send a location/velocity/accelleration update to all agents in scene
         /// </summary>
         public void SendTerseUpdateToAllClients()
         {
-            m_perfMonMS = Util.EnvironmentTickCount();
-            
-            m_scene.ForEachClient(SendTerseUpdateToClient);
+            int currentTick = Util.EnvironmentTickCount();
 
-            m_scene.StatsReporter.AddAgentTime(Util.EnvironmentTickCountSubtract(m_perfMonMS));
+            // decrease update frequency when avatar is moving but velocity is not changing
+            if (m_velocity.Length() < 0.01f
+                || Vector3.Distance(lastVelocitySentToAllClients, m_velocity) > 0.01f
+                || currentTick - lastTerseUpdateToAllClientsTick > 1500)
+            {
+                m_perfMonMS = currentTick;
+                lastVelocitySentToAllClients = m_velocity;
+                lastTerseUpdateToAllClientsTick = currentTick;
+
+                m_scene.ForEachClient(SendTerseUpdateToClient);
+
+                m_scene.StatsReporter.AddAgentTime(Util.EnvironmentTickCountSubtract(m_perfMonMS));
+            }
         }
 
         public void SendCoarseLocations(List<Vector3> coarseLocations, List<UUID> avatarUUIDs)
@@ -2632,18 +2672,17 @@ namespace OpenSim.Region.Framework.Scenes
                 cadu.GroupAccess = 0;
                 cadu.Position = AbsolutePosition;
                 cadu.regionHandle = m_rootRegionHandle;
+
+                // Throttles 
                 float multiplier = 1;
-                int innacurateNeighbors = m_scene.GetInaccurateNeighborCount();
-                if (innacurateNeighbors != 0)
-                {
-                    multiplier = 1f / (float)innacurateNeighbors;
-                }
-                if (multiplier <= 0f)
-                {
+                int childRegions = m_knownChildRegions.Count;
+                if (childRegions != 0)
+                    multiplier = 1f / childRegions;
+
+                // Minimum throttle for a child region is 1/4 of the root region throttle
+                if (multiplier <= 0.25f)
                     multiplier = 0.25f;
-                }
 
-                //m_log.Info("[NeighborThrottle]: " + m_scene.GetInaccurateNeighborCount().ToString() + " - m: " + multiplier.ToString());
                 cadu.throttles = ControllingClient.GetThrottlesPacked(multiplier);
                 cadu.Velocity = Velocity;
 
@@ -3039,16 +3078,14 @@ namespace OpenSim.Region.Framework.Scenes
 
             // Throttles 
             float multiplier = 1;
-            int innacurateNeighbors = m_scene.GetInaccurateNeighborCount();
-            if (innacurateNeighbors != 0)
-            {
-                multiplier = 1f / innacurateNeighbors;
-            }
-            if (multiplier <= 0f)
-            {
+            int childRegions = m_knownChildRegions.Count;
+            if (childRegions != 0)
+                multiplier = 1f / childRegions;
+
+            // Minimum throttle for a child region is 1/4 of the root region throttle
+            if (multiplier <= 0.25f)
                 multiplier = 0.25f;
-            }
-            //m_log.Info("[NeighborThrottle]: " + m_scene.GetInaccurateNeighborCount().ToString() + " - m: " + multiplier.ToString());
+
             cAgent.Throttles = ControllingClient.GetThrottlesPacked(multiplier);
 
             cAgent.HeadRotation = m_headrotation;
@@ -3064,54 +3101,6 @@ namespace OpenSim.Region.Framework.Scenes
 
             cAgent.Appearance = new AvatarAppearance(m_appearance);
             
-/*
-            try
-            {
-                // We might not pass the Wearables in all cases...
-                // They're only needed so that persistent changes to the appearance
-                // are preserved in the new region where the user is moving to.
-                // But in Hypergrid we might not let this happen.
-                int i = 0;
-                UUID[] wears = new UUID[m_appearance.Wearables.Length * 2];
-                foreach (AvatarWearable aw in m_appearance.Wearables)
-                {
-                    if (aw != null)
-                    {
-                        wears[i++] = aw.ItemID;
-                        wears[i++] = aw.AssetID;
-                    }
-                    else
-                    {
-                        wears[i++] = UUID.Zero;
-                        wears[i++] = UUID.Zero;
-                    }
-                }
-                cAgent.Wearables = wears;
-
-                cAgent.VisualParams = m_appearance.VisualParams;
-
-                if (m_appearance.Texture != null)
-                    cAgent.AgentTextures = m_appearance.Texture.GetBytes();
-            }
-            catch (Exception e)
-            {
-                m_log.Warn("[SCENE PRESENCE]: exception in CopyTo " + e.Message);
-            }
-
-            //Attachments
-            List<int> attPoints = m_appearance.GetAttachedPoints();
-            if (attPoints != null)
-            {
-                //m_log.DebugFormat("[SCENE PRESENCE]: attachments {0}", attPoints.Count);
-                int i = 0;
-                AvatarAttachment[] attachs = new AvatarAttachment[attPoints.Count];
-                foreach (int point in attPoints)
-                {
-                    attachs[i++] = new AvatarAttachment(point, m_appearance.GetAttachedItem(point), m_appearance.GetAttachedAsset(point));
-                }
-                cAgent.Attachments = attachs;
-            }
-*/
             lock (scriptedcontrols)
             {
                 ControllerData[] controls = new ControllerData[scriptedcontrols.Count];
@@ -3131,9 +3120,26 @@ namespace OpenSim.Region.Framework.Scenes
             }
             catch { }
 
-            // cAgent.GroupID = ??
-            // Groups???
-
+            // Attachment objects
+            if (m_attachments != null && m_attachments.Count > 0)
+            {
+                cAgent.AttachmentObjects = new List<ISceneObject>();
+                cAgent.AttachmentObjectStates = new List<string>();
+                IScriptModule se = m_scene.RequestModuleInterface<IScriptModule>();
+                foreach (SceneObjectGroup sog in m_attachments)
+                {
+                    // We need to make a copy and pass that copy
+                    // because of transfers withn the same sim
+                    ISceneObject clone = sog.CloneForNewScene();
+                    // Attachment module assumes that GroupPosition holds the offsets...!
+                    ((SceneObjectGroup)clone).RootPart.GroupPosition = sog.RootPart.AttachedPos;
+                    ((SceneObjectGroup)clone).RootPart.IsAttachment = false;
+                    cAgent.AttachmentObjects.Add(clone);
+                    cAgent.AttachmentObjectStates.Add(sog.GetStateSnapshot());
+                    // Let's remove the scripts of the original object here
+                    sog.RemoveScriptInstances(true);
+                }
+            }
         }
 
         public void CopyFrom(AgentData cAgent)
@@ -3174,50 +3180,6 @@ namespace OpenSim.Region.Framework.Scenes
                 AddToPhysicalScene(isFlying);
             }
             
-/*
-            uint i = 0;
-            try
-            {
-                if (cAgent.Wearables == null)
-                   cAgent.Wearables  = new UUID[0];
-                AvatarWearable[] wears = new AvatarWearable[cAgent.Wearables.Length / 2];
-                for (uint n = 0; n < cAgent.Wearables.Length; n += 2)
-                {
-                    UUID itemId = cAgent.Wearables[n];
-                    UUID assetId = cAgent.Wearables[n + 1];
-                    wears[i++] = new AvatarWearable(itemId, assetId);
-                }
-                // m_appearance.Wearables = wears;
-                Primitive.TextureEntry textures = null;
-                if (cAgent.AgentTextures != null && cAgent.AgentTextures.Length > 1)
-                    textures = new Primitive.TextureEntry(cAgent.AgentTextures, 0, cAgent.AgentTextures.Length);
-
-                byte[] visuals = null;
-
-                if ((cAgent.VisualParams != null) && (cAgent.VisualParams.Length < AvatarAppearance.VISUALPARAM_COUNT))
-                    visuals = (byte[])cAgent.VisualParams.Clone();
-
-                m_appearance = new AvatarAppearance(cAgent.AgentID,wears,textures,visuals);
-            }
-            catch (Exception e)
-            {
-                m_log.Warn("[SCENE PRESENCE]: exception in CopyFrom " + e.Message);
-            }
-
-            // Attachments
-            try
-            {
-                if (cAgent.Attachments != null)
-                {
-                    m_appearance.ClearAttachments();
-                    foreach (AvatarAttachment att in cAgent.Attachments)
-                    {
-                        m_appearance.SetAttachment(att.AttachPoint, att.ItemID, att.AssetID);
-                    }
-                }
-            }
-            catch { } 
-*/
             try
             {
                 lock (scriptedcontrols)
@@ -3247,8 +3209,18 @@ namespace OpenSim.Region.Framework.Scenes
             }
             catch {  }
 
-            //cAgent.GroupID = ??
-            //Groups???
+            if (cAgent.AttachmentObjects != null && cAgent.AttachmentObjects.Count > 0)
+            {
+                m_attachments = new List<SceneObjectGroup>();
+                int i = 0;
+                foreach (ISceneObject so in cAgent.AttachmentObjects)
+                {
+                    ((SceneObjectGroup)so).LocalId = 0;
+                    ((SceneObjectGroup)so).RootPart.UpdateFlag = 0;
+                    so.SetState(cAgent.AttachmentObjectStates[i++], m_scene);
+                    m_scene.IncomingCreateObject(so);
+                }
+            }
         }
 
         public bool CopyAgent(out IAgentData agent)
@@ -3271,10 +3243,7 @@ namespace OpenSim.Region.Framework.Scenes
 
                 m_updateflag = true;
 
-                // The magic constant 0.95f seems to make walking feel less jerky,
-                // probably because it hackishly accounts for the overall latency of
-                // these Velocity updates -- Diva
-                Velocity = force * .95F;
+                Velocity = force;
 
                 m_forceToApply = null;
             }
diff --git a/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs b/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs
index 6a24cc1..db17d8f 100644
--- a/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs
+++ b/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs
@@ -82,6 +82,14 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                 m_scenes[scene.RegionInfo.RegionID] = scene;            
 
             scene.AddCommand(
+                this, "show pqueues",
+                "show pqueues [full]",
+                "Show priority queue data for each client", 
+                "Without the 'full' option, only root agents are shown."
+                  + "  With the 'full' option child agents are also shown.",                                          
+                ShowPQueuesReport);   
+            
+            scene.AddCommand(
                 this, "show queues",
                 "show queues [full]",
                 "Show queue data for each client", 
@@ -119,6 +127,11 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
 //            m_log.DebugFormat("[LINDEN UDP INFO MODULE]: REGION {0} LOADED", scene.RegionInfo.RegionName);
         }                 
 
+        protected void ShowPQueuesReport(string module, string[] cmd)
+        {                       
+            MainConsole.Instance.Output(GetPQueuesReport(cmd));
+        }
+        
         protected void ShowQueuesReport(string module, string[] cmd)
         {                       
             MainConsole.Instance.Output(GetQueuesReport(cmd));
@@ -155,6 +168,80 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                 "");
         }
         
+
+        /// <summary>
+        /// Generate UDP Queue data report for each client
+        /// </summary>
+        /// <param name="showParams"></param>
+        /// <returns></returns>
+        protected string GetPQueuesReport(string[] showParams)
+        {
+            bool showChildren = false;
+            string pname = "";
+            
+            if (showParams.Length > 2 && showParams[2] == "full")
+                showChildren = true;               
+            else if (showParams.Length > 3)
+                pname = showParams[2] + " " + showParams[3];
+            
+            StringBuilder report = new StringBuilder();            
+
+            int columnPadding = 2;
+            int maxNameLength = 18;                                    
+            int maxRegionNameLength = 14;
+            int maxTypeLength = 4;
+            int totalInfoFieldsLength = maxNameLength + columnPadding + maxRegionNameLength + columnPadding + maxTypeLength + columnPadding;                        
+                                    
+            report.Append(GetColumnEntry("User", maxNameLength, columnPadding));
+            report.Append(GetColumnEntry("Region", maxRegionNameLength, columnPadding));
+            report.Append(GetColumnEntry("Type", maxTypeLength, columnPadding));
+            
+            report.AppendFormat(
+                "{0,7} {1,7} {2,7} {3,7} {4,7} {5,7} {6,7} {7,7} {8,7} {9,7} {10,7} {11,7}\n",
+                "Pri 0",
+                "Pri 1",
+                "Pri 2",                                
+                "Pri 3",
+                "Pri 4",
+                "Pri 5",
+                "Pri 6",
+                "Pri 7",
+                "Pri 8",
+                "Pri 9",
+                "Pri 10",
+                "Pri 11");
+
+            lock (m_scenes)
+            {
+                foreach (Scene scene in m_scenes.Values)
+                {
+                    scene.ForEachClient(
+                        delegate(IClientAPI client)
+                        {
+                            if (client is LLClientView)
+                            {
+                                bool isChild = scene.PresenceChildStatus(client.AgentId);
+                                if (isChild && !showChildren)
+                                    return;
+                        
+                                string name = client.Name;
+                                if (pname != "" && name != pname)
+                                    return;
+                                
+                                string regionName = scene.RegionInfo.RegionName;
+                                
+                                report.Append(GetColumnEntry(name, maxNameLength, columnPadding));
+                                report.Append(GetColumnEntry(regionName, maxRegionNameLength, columnPadding));
+                                report.Append(GetColumnEntry(isChild ? "Cd" : "Rt", maxTypeLength, columnPadding));                                  
+                                report.AppendLine(((LLClientView)client).EntityUpdateQueue.ToString());
+                            }
+                        });
+                }
+            }
+
+            return report.ToString();
+        }
+        
         /// <summary>
         /// Generate UDP Queue data report for each client
         /// </summary>
@@ -163,10 +250,13 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
         protected string GetQueuesReport(string[] showParams)
         {
             bool showChildren = false;
+            string pname = "";
             
             if (showParams.Length > 2 && showParams[2] == "full")
                 showChildren = true;               
-                
+            else if (showParams.Length > 3)
+                pname = showParams[2] + " " + showParams[3];
+            
             StringBuilder report = new StringBuilder();            
             
             int columnPadding = 2;
@@ -224,6 +314,9 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                                     return;
                         
                                 string name = client.Name;
+                                if (pname != "" && name != pname)
+                                    return;
+
                                 string regionName = scene.RegionInfo.RegionName;
                                 
                                 report.Append(GetColumnEntry(name, maxNameLength, columnPadding));
@@ -249,10 +342,13 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
         protected string GetThrottlesReport(string[] showParams)
         {
             bool showChildren = false;
+            string pname = "";
             
             if (showParams.Length > 2 && showParams[2] == "full")
                 showChildren = true;               
-                
+            else if (showParams.Length > 3)
+                pname = showParams[2] + " " + showParams[3];
+            
             StringBuilder report = new StringBuilder();               
             
             int columnPadding = 2;
@@ -302,7 +398,7 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                             if (client is LLClientView)
                             {
                                 LLClientView llClient = client as LLClientView;
-                            
+
                                 if (firstClient)
                                 {
                                     report.AppendLine(GetServerThrottlesReport(llClient.UDPServer));
@@ -314,6 +410,9 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                                     return;
                         
                                 string name = client.Name;
+                                if (pname != "" && name != pname)
+                                    return;
+
                                 string regionName = scene.RegionInfo.RegionName;
                             
                                 LLUDPClient llUdpClient = llClient.UDPClient;
@@ -352,7 +451,7 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
             int maxRegionNameLength = 14;
             int maxTypeLength = 4;
             
-            string name = "SERVER AGENT LIMITS";
+            string name = "SERVER AGENT RATES";
                                 
             report.Append(GetColumnEntry(name, maxNameLength, columnPadding));
             report.Append(GetColumnEntry("-", maxRegionNameLength, columnPadding));
@@ -362,13 +461,13 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
             report.AppendFormat(
                 "{0,7} {1,8} {2,7} {3,7} {4,7} {5,7} {6,9} {7,7}",
                 (throttleRates.Total * 8) / 1000,
-                (throttleRates.ResendLimit * 8) / 1000,
-                (throttleRates.LandLimit * 8) / 1000,
-                (throttleRates.WindLimit * 8) / 1000,
-                (throttleRates.CloudLimit * 8) / 1000,
-                (throttleRates.TaskLimit * 8) / 1000,
-                (throttleRates.TextureLimit  * 8) / 1000,
-                (throttleRates.AssetLimit  * 8) / 1000);  
+                (throttleRates.Resend * 8) / 1000,
+                (throttleRates.Land * 8) / 1000,
+                (throttleRates.Wind * 8) / 1000,
+                (throttleRates.Cloud * 8) / 1000,
+                (throttleRates.Task * 8) / 1000,
+                (throttleRates.Texture  * 8) / 1000,
+                (throttleRates.Asset  * 8) / 1000);  
 
             return report.ToString();
         }        
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
index 64774d8..f89b824 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
@@ -88,7 +88,8 @@ namespace OpenSim.Region.Physics.Meshing
 
             decodedSculptMapPath = start_config.GetString("DecodedSculptMapPath","j2kDecodeCache");
             cacheSculptMaps = start_config.GetBoolean("CacheSculptMaps", cacheSculptMaps);
-            useMeshiesPhysicsMesh = mesh_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
+            if(mesh_config != null)
+                useMeshiesPhysicsMesh = mesh_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
 
             try
             {