Some more debug to see how many threads are available.

OpenSim/Region/Framework/Scenes/ScenePresence.cs

@@ -1383,6 +1383,8 @@ namespace OpenSim.Region.Framework.Scenes
                     sog.ScheduleGroupForFullUpdate();
             }
 
+            m_log.DebugFormat("[SCENE PRESENCE]: ({0}) Available threads: {1}", Name, Util.FireAndForgetCount());
+
 //            m_log.DebugFormat(
 //                "[SCENE PRESENCE]: Completing movement of {0} into region {1} took {2}ms", 
 //                client.Name, Scene.RegionInfo.RegionName, (DateTime.Now - startTime).Milliseconds);