diff --git a/OpenSim/Framework/Watchdog.cs b/OpenSim/Framework/Watchdog.cs
index 9baf3a0702..3389ecb014 100644
--- a/OpenSim/Framework/Watchdog.cs
+++ b/OpenSim/Framework/Watchdog.cs
@@ -127,7 +127,7 @@ namespace OpenSim.Framework
                 m_threads.Add(threadInfo.Thread.ManagedThreadId, threadInfo);
         }
 
-        private static bool RemoveThread(int threadID)
+        public static bool RemoveThread(int threadID)
         {
             lock (m_threads)
                 return m_threads.Remove(threadID);
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index d915807aa7..deeb81724f 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -1093,6 +1093,7 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 m_log.ErrorFormat("[SCENE]: Restarting heartbeat thread because it hasn't reported in in region {0}", RegionInfo.RegionName);
                 HeartbeatThread.Abort();
+                Watchdog.RemoveThread(HeartbeatThread.ManagedThreadId);
                 HeartbeatThread = null;
             }
             m_lastUpdate = Util.EnvironmentTickCount();
@@ -4801,7 +4802,7 @@ namespace OpenSim.Region.Framework.Scenes
             if (m_firstHeartbeat)
                 return;
 
-            if (Util.EnvironmentTickCountSubtract(m_lastUpdate) > 2000)
+            if (Util.EnvironmentTickCountSubtract(m_lastUpdate) > 10000)
                 StartTimer();
         }
 
diff --git a/OpenSim/Region/Framework/Scenes/SceneViewer.cs b/OpenSim/Region/Framework/Scenes/SceneViewer.cs
index b44a0100a4..40a73a9d4c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneViewer.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneViewer.cs
@@ -106,7 +106,7 @@ namespace OpenSim.Region.Framework.Scenes
                         g.ScheduleFullUpdateToAvatar(m_presence);
                 }
 
-                while (m_partsUpdateQueue.Count > 0)
+                while (m_partsUpdateQueue.Count != null && m_partsUpdateQueue.Count > 0)
                 {
                     SceneObjectPart part = m_partsUpdateQueue.Dequeue();