1 files changed, 4 insertions, 1 deletions

diff --git a/OpenSim/Framework/BlockingQueue.cs b/OpenSim/Framework/BlockingQueue.cs
index e03229b..857930a 100644
--- a/OpenSim/Framework/BlockingQueue.cs
+++ b/OpenSim/Framework/BlockingQueue.cs
@@ -66,7 +66,9 @@ namespace OpenSim.Framework
                 if (m_pqueue.Count > 0)
                     return m_pqueue.Dequeue();
                 
-                return m_queue.Dequeue();
+                if (m_queue.Count > 0)
+                                        return m_queue.Dequeue();
+                                return default(T);
             }
         }
 
@@ -119,6 +121,7 @@ namespace OpenSim.Framework
             {
                 m_pqueue.Clear();
                 m_queue.Clear();
+                                Monitor.Pulse(m_queueSync);
             }
         }
     }