10 files changed, 153 insertions, 145 deletions

diff --git a/OpenSim/Data/MySQL/MySQLAssetData.cs b/OpenSim/Data/MySQL/MySQLAssetData.cs
index fc05d1d..4d49733 100644
--- a/OpenSim/Data/MySQL/MySQLAssetData.cs
+++ b/OpenSim/Data/MySQL/MySQLAssetData.cs
@@ -167,9 +167,6 @@ namespace OpenSim.Data.MySQL
                                 asset.Temporary = Convert.ToBoolean(dbReader["temporary"]);
                             }
                         }
-
-                        if (asset != null)
-                            UpdateAccessTime(asset);
                     }
                     catch (Exception e)
                     {
diff --git a/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs b/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs
index 801d6b9..c07963c 100644
--- a/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs
+++ b/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs
@@ -1430,37 +1430,36 @@ namespace OpenSim.Data.MySQL
         {
             PrimitiveBaseShape s = new PrimitiveBaseShape();
             s.Scale = new Vector3(
-                Convert.ToSingle(row["ScaleX"]),
-                Convert.ToSingle(row["ScaleY"]),
-                Convert.ToSingle(row["ScaleZ"])
-                );
+                (float)(double)row["ScaleX"],
+                (float)(double)row["ScaleY"],
+                (float)(double)row["ScaleZ"]
+            );
             // paths
-            s.PCode = Convert.ToByte(row["PCode"]);
-            s.PathBegin = Convert.ToUInt16(row["PathBegin"]);
-            s.PathEnd = Convert.ToUInt16(row["PathEnd"]);
-            s.PathScaleX = Convert.ToByte(row["PathScaleX"]);
-            s.PathScaleY = Convert.ToByte(row["PathScaleY"]);
-            s.PathShearX = Convert.ToByte(row["PathShearX"]);
-            s.PathShearY = Convert.ToByte(row["PathShearY"]);
-            s.PathSkew = Convert.ToSByte(row["PathSkew"]);
-            s.PathCurve = Convert.ToByte(row["PathCurve"]);
-            s.PathRadiusOffset = Convert.ToSByte(row["PathRadiusOffset"]);
-            s.PathRevolutions = Convert.ToByte(row["PathRevolutions"]);
-            s.PathTaperX = Convert.ToSByte(row["PathTaperX"]);
-            s.PathTaperY = Convert.ToSByte(row["PathTaperY"]);
-            s.PathTwist = Convert.ToSByte(row["PathTwist"]);
-            s.PathTwistBegin = Convert.ToSByte(row["PathTwistBegin"]);
+            s.PCode = (byte)(int)row["PCode"];
+            s.PathBegin = (ushort)(int)row["PathBegin"];
+            s.PathEnd = (ushort)(int)row["PathEnd"];
+            s.PathScaleX = (byte)(int)row["PathScaleX"];
+            s.PathScaleY = (byte)(int)row["PathScaleY"];
+            s.PathShearX = (byte)(int)row["PathShearX"];
+            s.PathShearY = (byte)(int)row["PathShearY"];
+            s.PathSkew = (sbyte)(int)row["PathSkew"];
+            s.PathCurve = (byte)(int)row["PathCurve"];
+            s.PathRadiusOffset = (sbyte)(int)row["PathRadiusOffset"];
+            s.PathRevolutions = (byte)(int)row["PathRevolutions"];
+            s.PathTaperX = (sbyte)(int)row["PathTaperX"];
+            s.PathTaperY = (sbyte)(int)row["PathTaperY"];
+            s.PathTwist = (sbyte)(int)row["PathTwist"];
+            s.PathTwistBegin = (sbyte)(int)row["PathTwistBegin"];
             // profile
-            s.ProfileBegin = Convert.ToUInt16(row["ProfileBegin"]);
-            s.ProfileEnd = Convert.ToUInt16(row["ProfileEnd"]);
-            s.ProfileCurve = Convert.ToByte(row["ProfileCurve"]);
-            s.ProfileHollow = Convert.ToUInt16(row["ProfileHollow"]);
-            byte[] textureEntry = (byte[]) row["Texture"];
-            s.TextureEntry = textureEntry;
+            s.ProfileBegin = (ushort)(int)row["ProfileBegin"];
+            s.ProfileEnd = (ushort)(int)row["ProfileEnd"];
+            s.ProfileCurve = (byte)(int)row["ProfileCurve"];
+            s.ProfileHollow = (ushort)(int)row["ProfileHollow"];
+            s.TextureEntry = (byte[])row["Texture"];
 
-            s.ExtraParams = (byte[]) row["ExtraParams"];
+            s.ExtraParams = (byte[])row["ExtraParams"];
 
-            s.State = Convert.ToByte(row["State"]);
+            s.State = (byte)(int)row["State"];
 
             return s;
         }
diff --git a/OpenSim/Framework/PrimitiveBaseShape.cs b/OpenSim/Framework/PrimitiveBaseShape.cs
index b646f92..5e4d175 100644
--- a/OpenSim/Framework/PrimitiveBaseShape.cs
+++ b/OpenSim/Framework/PrimitiveBaseShape.cs
@@ -76,7 +76,7 @@ namespace OpenSim.Framework
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        private static readonly Primitive.TextureEntry m_defaultTexture;
+        private static readonly byte[] DEFAULT_TEXTURE = new Primitive.TextureEntry(new UUID("89556747-24cb-43ed-920b-47caed15465f")).GetBytes();
 
         private byte[] m_textureEntry;
 
@@ -104,33 +104,32 @@ namespace OpenSim.Framework
         private HollowShape _hollowShape;
 
         // Sculpted
-        [XmlIgnore] private UUID _sculptTexture = UUID.Zero;
-        [XmlIgnore] private byte _sculptType = (byte)0;
-        [XmlIgnore] private byte[] _sculptData = new byte[0];
-        [XmlIgnore] private Image _sculptBitmap = null;
+        [XmlIgnore] private UUID _sculptTexture;
+        [XmlIgnore] private byte _sculptType;
+        [XmlIgnore] private byte[] _sculptData = Utils.EmptyBytes;
 
         // Flexi
-        [XmlIgnore] private int _flexiSoftness = 0;
-        [XmlIgnore] private float _flexiTension = 0f;
-        [XmlIgnore] private float _flexiDrag = 0f;
-        [XmlIgnore] private float _flexiGravity = 0f;
-        [XmlIgnore] private float _flexiWind = 0f;
-        [XmlIgnore] private float _flexiForceX = 0f;
-        [XmlIgnore] private float _flexiForceY = 0f;
-        [XmlIgnore] private float _flexiForceZ = 0f;
+        [XmlIgnore] private int _flexiSoftness;
+        [XmlIgnore] private float _flexiTension;
+        [XmlIgnore] private float _flexiDrag;
+        [XmlIgnore] private float _flexiGravity;
+        [XmlIgnore] private float _flexiWind;
+        [XmlIgnore] private float _flexiForceX;
+        [XmlIgnore] private float _flexiForceY;
+        [XmlIgnore] private float _flexiForceZ;
 
         //Bright n sparkly
-        [XmlIgnore] private float _lightColorR = 0f;
-        [XmlIgnore] private float _lightColorG = 0f;
-        [XmlIgnore] private float _lightColorB = 0f;
-        [XmlIgnore] private float _lightColorA = 1f;
-        [XmlIgnore] private float _lightRadius = 0f;
-        [XmlIgnore] private float _lightCutoff = 0f;
-        [XmlIgnore] private float _lightFalloff = 0f;
-        [XmlIgnore] private float _lightIntensity = 1f;
-        [XmlIgnore] private bool _flexiEntry = false;
-        [XmlIgnore] private bool _lightEntry = false;
-        [XmlIgnore] private bool _sculptEntry = false;
+        [XmlIgnore] private float _lightColorR;
+        [XmlIgnore] private float _lightColorG;
+        [XmlIgnore] private float _lightColorB;
+        [XmlIgnore] private float _lightColorA = 1.0f;
+        [XmlIgnore] private float _lightRadius;
+        [XmlIgnore] private float _lightCutoff;
+        [XmlIgnore] private float _lightFalloff;
+        [XmlIgnore] private float _lightIntensity = 1.0f;
+        [XmlIgnore] private bool _flexiEntry;
+        [XmlIgnore] private bool _lightEntry;
+        [XmlIgnore] private bool _sculptEntry;
 
         public byte ProfileCurve
         {
@@ -172,17 +171,11 @@ namespace OpenSim.Framework
             }
         }
 
-        static PrimitiveBaseShape()
-        {
-            m_defaultTexture =
-                new Primitive.TextureEntry(new UUID("89556747-24cb-43ed-920b-47caed15465f"));
-        }
-
         public PrimitiveBaseShape()
         {
             PCode = (byte) PCodeEnum.Primitive;
             ExtraParams = new byte[1];
-            Textures = m_defaultTexture;
+            m_textureEntry = DEFAULT_TEXTURE;
         }
 
         public PrimitiveBaseShape(bool noShape)
@@ -192,7 +185,7 @@ namespace OpenSim.Framework
 
             PCode = (byte)PCodeEnum.Primitive;
             ExtraParams = new byte[1];
-            Textures = m_defaultTexture;
+            m_textureEntry = DEFAULT_TEXTURE;
         }
 
         [XmlIgnore]
@@ -577,15 +570,6 @@ namespace OpenSim.Framework
             }
         }
 
-        public Image SculptBitmap {
-            get {
-                return _sculptBitmap;
-            }
-            set {
-                _sculptBitmap = value;
-            }
-        }
-
         public int FlexiSoftness {
             get {
                 return _flexiSoftness;
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs
index d2cd6d9..0948e1c 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPClient.cs
@@ -144,6 +144,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         private readonly OutgoingPacket[] m_nextPackets = new OutgoingPacket[THROTTLE_CATEGORY_COUNT];
         /// <summary>A reference to the LLUDPServer that is managing this client</summary>
         private readonly LLUDPServer m_udpServer;
+        /// <summary>Locks access to the variables used while calculating round-trip
+        /// packet times and the retransmission timeout</summary>
+        private readonly object m_roundTripCalcLock = new object();
 
         /// <summary>
         /// Default constructor
@@ -484,29 +487,52 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             const float BETA = 0.25f;
             const float K = 4.0f;
 
-            if (RTTVAR == 0.0f)
+            lock (m_roundTripCalcLock)
             {
-                // First RTT measurement
-                SRTT = r;
-                RTTVAR = r * 0.5f;
-            }
-            else
-            {
-                // Subsequence RTT measurement
-                RTTVAR = (1.0f - BETA) * RTTVAR + BETA * Math.Abs(SRTT - r);
-                SRTT = (1.0f - ALPHA) * SRTT + ALPHA * r;
-            }
+                if (RTTVAR == 0.0f)
+                {
+                    // First RTT measurement
+                    SRTT = r;
+                    RTTVAR = r * 0.5f;
+                }
+                else
+                {
+                    // Subsequence RTT measurement
+                    RTTVAR = (1.0f - BETA) * RTTVAR + BETA * Math.Abs(SRTT - r);
+                    SRTT = (1.0f - ALPHA) * SRTT + ALPHA * r;
+                }
 
-            RTO = (int)(SRTT + Math.Max(m_udpServer.TickCountResolution, K * RTTVAR));
+                int rto = (int)(SRTT + Math.Max(m_udpServer.TickCountResolution, K * RTTVAR));
 
-            // Clamp the retransmission timeout to manageable values
-            RTO = Utils.Clamp(RTO, 3000, 60000);
+                // Clamp the retransmission timeout to manageable values
+                rto = Utils.Clamp(RTO, 3000, 60000);
+
+                RTO = rto;
+            }
 
             //m_log.Debug("[LLUDPCLIENT]: Setting agent " + this.Agent.FullName + "'s RTO to " + RTO + "ms with an RTTVAR of " +
             //    RTTVAR + " based on new RTT of " + r + "ms");
         }
 
         /// <summary>
+        /// Exponential backoff of the retransmission timeout, per section 5.5
+        /// of RFC 2988
+        /// </summary>
+        public void BackoffRTO()
+        {
+            lock (m_roundTripCalcLock)
+            {
+                // Reset SRTT and RTTVAR, we assume they are bogus since things
+                // didn't work out and we're backing off the timeout
+                SRTT = 0.0f;
+                RTTVAR = 0.0f;
+
+                // Double the retransmission timeout
+                RTO = Math.Min(RTO * 2, 60000);
+            }
+        }
+
+        /// <summary>
         /// Does an early check to see if this queue empty callback is already
         /// running, then asynchronously firing the event
         /// </summary>
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
index 1dd58bf..82ae640 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
@@ -431,8 +431,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             {
                 m_log.Debug("[LLUDPSERVER]: Resending " + expiredPackets.Count + " packets to " + udpClient.AgentID + ", RTO=" + udpClient.RTO);
 
-                // Backoff the RTO
-                udpClient.RTO = Math.Min(udpClient.RTO * 2, 60000);
+                // Exponential backoff of the retransmission timeout
+                udpClient.BackoffRTO();
 
                 // Resend packets
                 for (int i = 0; i < expiredPackets.Count; i++)
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 47b13bd..f052c65 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -4246,7 +4246,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void ForEachClient(Action<IClientAPI> action)
         {
-            ClientManager.ForEach(action);
+            ClientManager.ForEachSync(action);
         }
 
         public void ForEachSOG(Action<SceneObjectGroup> action)
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index dd8da20..34ada4c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -1334,7 +1334,7 @@ namespace OpenSim.Region.Framework.Scenes
                                 (parcel.LandData.GroupID != GroupID ||
                                 parcel.LandData.GroupID == UUID.Zero))
                         {
-                            if ((DateTime.Now - RootPart.Rezzed).TotalMinutes >
+                            if ((DateTime.UtcNow - RootPart.Rezzed).TotalMinutes >
                                     parcel.LandData.OtherCleanTime)
                             {
                                 DetachFromBackup();
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 7193002..d84c35c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -102,16 +102,16 @@ namespace OpenSim.Region.Framework.Scenes
 
         #region Fields
 
-        public bool AllowedDrop = false;
+        public bool AllowedDrop;
 
         [XmlIgnore]
-        public bool DIE_AT_EDGE = false;
+        public bool DIE_AT_EDGE;
 
         // TODO: This needs to be persisted in next XML version update!
         [XmlIgnore]
-        public int[] PayPrice = {-2,-2,-2,-2,-2};
+        public readonly int[] PayPrice = {-2,-2,-2,-2,-2};
         [XmlIgnore]
-        public PhysicsActor PhysActor = null;
+        public PhysicsActor PhysActor;
 
         //Xantor 20080528 Sound stuff:
         //  Note: This isn't persisted in the database right now, as the fields for that aren't just there yet.
@@ -130,55 +130,56 @@ namespace OpenSim.Region.Framework.Scenes
         public double SoundRadius;
         
         [XmlIgnore]
-        public uint TimeStampFull = 0;
+        public uint TimeStampFull;
         
         [XmlIgnore]
-        public uint TimeStampLastActivity = 0; // Will be used for AutoReturn
+        public uint TimeStampLastActivity; // Will be used for AutoReturn
         
         [XmlIgnore]
-        public uint TimeStampTerse = 0;
-        
+        public uint TimeStampTerse;
+
         [XmlIgnore]
-        public UUID FromItemID = UUID.Zero;
+        public UUID FromItemID;
                
         /// <value>
         /// The UUID of the user inventory item from which this object was rezzed if this is a root part.
         /// If UUID.Zero then either this is not a root part or there is no connection with a user inventory item.
         /// </value>
-        private UUID m_fromUserInventoryItemID = UUID.Zero;
+        private UUID m_fromUserInventoryItemID;
         
         [XmlIgnore]
         public UUID FromUserInventoryItemID
         {
             get { return m_fromUserInventoryItemID; }
         }
-        
+
         [XmlIgnore]
-        public bool IsAttachment = false;
-        
+        public bool IsAttachment;
+
         [XmlIgnore]
-        public scriptEvents AggregateScriptEvents = 0;
-        
+        public scriptEvents AggregateScriptEvents;
+
         [XmlIgnore]
-        public UUID AttachedAvatar = UUID.Zero;
-        
+        public UUID AttachedAvatar;
+
         [XmlIgnore]
-        public Vector3 AttachedPos = Vector3.Zero;
-        
+        public Vector3 AttachedPos;
+
         [XmlIgnore]
-        public uint AttachmentPoint = (byte)0;
+        public uint AttachmentPoint;
         
         [XmlIgnore]
-        public PhysicsVector RotationAxis = new PhysicsVector(1f,1f,1f);
+        public PhysicsVector RotationAxis = new PhysicsVector(1f, 1f, 1f);
 
         [XmlIgnore]
-        public bool VolumeDetectActive = false; // XmlIgnore set to avoid problems with persistance until I come to care for this
-                                                // Certainly this must be a persistant setting finally
+        public bool VolumeDetectActive; // XmlIgnore set to avoid problems with persistance until I come to care for this
+                                        // Certainly this must be a persistant setting finally
 
         [XmlIgnore]
-        public bool IsWaitingForFirstSpinUpdatePacket = false;
+        public bool IsWaitingForFirstSpinUpdatePacket;
+
         [XmlIgnore]
-        public Quaternion SpinOldOrientation = new Quaternion();
+        public Quaternion SpinOldOrientation = Quaternion.Identity;
 
         /// <summary>
         /// This part's inventory
@@ -191,34 +192,32 @@ namespace OpenSim.Region.Framework.Scenes
         protected SceneObjectPartInventory m_inventory;
 
         [XmlIgnore]
-        public bool Undoing = false;
+        public bool Undoing;
 
         [XmlIgnore]
-        private PrimFlags LocalFlags = 0;
+        private PrimFlags LocalFlags;
         [XmlIgnore]
         private float m_damage = -1.0f;
         private byte[] m_TextureAnimation;
-        private byte m_clickAction = 0;
+        private byte m_clickAction;
         private Color m_color = Color.Black;
         private string m_description = String.Empty;
         private readonly List<uint> m_lastColliders = new List<uint>();
-        // private PhysicsVector m_lastRotationalVelocity = PhysicsVector.Zero;
-        private int m_linkNum = 0;
+        private int m_linkNum;
         [XmlIgnore]
-        private int m_scriptAccessPin = 0;
+        private int m_scriptAccessPin;
         [XmlIgnore]
         private readonly Dictionary<UUID, scriptEvents> m_scriptEvents = new Dictionary<UUID, scriptEvents>();
         private string m_sitName = String.Empty;
         private Quaternion m_sitTargetOrientation = Quaternion.Identity;
-        private Vector3 m_sitTargetPosition = Vector3.Zero;
+        private Vector3 m_sitTargetPosition;
         private string m_sitAnimation = "SIT";
         private string m_text = String.Empty;
         private string m_touchName = String.Empty;
         private readonly UndoStack<UndoState> m_undo = new UndoStack<UndoState>(5);
         private UUID _creatorID;
 
-
-        private bool m_passTouches = false;
+        private bool m_passTouches;
 
         /// <summary>
         /// Only used internally to schedule client updates.
@@ -236,28 +235,28 @@ namespace OpenSim.Region.Framework.Scenes
         //unkown if this will be kept, added as a way of removing the group position from the group class
         protected Vector3 m_groupPosition;
         protected uint m_localId;
-        protected Material m_material = (Material)3; // Wood
+        protected Material m_material = OpenMetaverse.Material.Wood;
         protected string m_name;
         protected Vector3 m_offsetPosition;
 
         // FIXME, TODO, ERROR: 'ParentGroup' can't be in here, move it out.
         protected SceneObjectGroup m_parentGroup;
-        protected byte[] m_particleSystem = new byte[0];
+        protected byte[] m_particleSystem = Utils.EmptyBytes;
         protected ulong m_regionHandle;
         protected Quaternion m_rotationOffset;
-        protected PrimitiveBaseShape m_shape = null;
+        protected PrimitiveBaseShape m_shape;
         protected UUID m_uuid;
         protected Vector3 m_velocity;
 
         // TODO: Those have to be changed into persistent properties at some later point,
         // or sit-camera on vehicles will break on sim-crossing.
-        private Vector3 m_cameraEyeOffset = new Vector3(0.0f, 0.0f, 0.0f);
-        private Vector3 m_cameraAtOffset = new Vector3(0.0f, 0.0f, 0.0f);
-        private bool m_forceMouselook = false;
+        private Vector3 m_cameraEyeOffset;
+        private Vector3 m_cameraAtOffset;
+        private bool m_forceMouselook;
 
         // TODO: Collision sound should have default.
-        private UUID m_collisionSound = UUID.Zero;
-        private float m_collisionSoundVolume = 0.0f;
+        private UUID m_collisionSound;
+        private float m_collisionSoundVolume;
 
         #endregion Fields
 
@@ -269,9 +268,9 @@ namespace OpenSim.Region.Framework.Scenes
         public SceneObjectPart()
         {
             // It's not necessary to persist this
-            m_TextureAnimation = new byte[0];
-            m_particleSystem = new byte[0];
-            Rezzed = DateTime.Now;
+            m_TextureAnimation = Utils.EmptyBytes;
+            m_particleSystem = Utils.EmptyBytes;
+            Rezzed = DateTime.UtcNow;
             
             m_inventory = new SceneObjectPartInventory(this);
         }
@@ -290,8 +289,8 @@ namespace OpenSim.Region.Framework.Scenes
         {
             m_name = "Primitive";
 
-            Rezzed = DateTime.Now;
-            _creationDate = (Int32) (DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;
+            Rezzed = DateTime.UtcNow;
+            _creationDate = (int)Utils.DateTimeToUnixTime(Rezzed);
             _ownerID = ownerID;
             _creatorID = _ownerID;
             _lastOwnerID = UUID.Zero;
@@ -299,19 +298,19 @@ namespace OpenSim.Region.Framework.Scenes
             Shape = shape;
             // Todo: Add More Object Parameter from above!
             _ownershipCost = 0;
-            _objectSaleType = (byte) 0;
+            _objectSaleType = 0;
             _salePrice = 0;
-            _category = (uint) 0;
+            _category = 0;
             _lastOwnerID = _creatorID;
             // End Todo: ///
             GroupPosition = groupPosition;
             OffsetPosition = offsetPosition;
             RotationOffset = rotationOffset;
-            Velocity = new Vector3(0, 0, 0);
-            AngularVelocity = new Vector3(0, 0, 0);
-            Acceleration = new Vector3(0, 0, 0);
-            m_TextureAnimation = new byte[0];
-            m_particleSystem = new byte[0];
+            Velocity = Vector3.Zero;
+            AngularVelocity = Vector3.Zero;
+            Acceleration = Vector3.Zero;
+            m_TextureAnimation = Utils.EmptyBytes;
+            m_particleSystem = Utils.EmptyBytes;
 
             // Prims currently only contain a single folder (Contents).  From looking at the Second Life protocol,
             // this appears to have the same UUID (!) as the prim.  If this isn't the case, one can't drag items from
@@ -3548,7 +3547,7 @@ if (m_shape != null) {
             // in SL.
             //
             if (ParentGroup.RootPart != this)
-                ParentGroup.RootPart.Rezzed = DateTime.Now;
+                ParentGroup.RootPart.Rezzed = DateTime.UtcNow;
 
             ParentGroup.HasGroupChanged = true;
             ScheduleFullUpdate();
diff --git a/OpenSim/Region/Physics/Manager/ZeroMesher.cs b/OpenSim/Region/Physics/Manager/ZeroMesher.cs
index f9d0f2a..81eeed2 100644
--- a/OpenSim/Region/Physics/Manager/ZeroMesher.cs
+++ b/OpenSim/Region/Physics/Manager/ZeroMesher.cs
@@ -67,6 +67,9 @@ namespace OpenSim.Region.Physics.Manager
 
         public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, PhysicsVector size, float lod, bool isPhysical)
         {
+            // Remove the reference to the encoded JPEG2000 data so it can be GCed
+            primShape.SculptData = OpenMetaverse.Utils.EmptyBytes;
+
             return null;
         }
     }
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
index f609e73..01093e2 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
@@ -281,7 +281,7 @@ namespace OpenSim.Region.Physics.Meshing
 
                 if (idata == null)
                 {
-                    if (primShape.SculptData.Length == 0)
+                    if (primShape.SculptData == null || primShape.SculptData.Length == 0)
                         return null;
 
                     try