diff --git a/OpenSim/Framework/Monitoring/Watchdog.cs b/OpenSim/Framework/Monitoring/Watchdog.cs
index 83f8e016bb..b2c1fb178c 100644
--- a/OpenSim/Framework/Monitoring/Watchdog.cs
+++ b/OpenSim/Framework/Monitoring/Watchdog.cs
@@ -332,41 +332,37 @@ namespace OpenSim.Framework.Monitoring
             if (callback != null)
             {
                 List<ThreadWatchdogInfo> callbackInfos = null;
-
-                // get a copy since we may change m_threads
                 List<ThreadWatchdogInfo> threadsInfo;
+
                 lock (m_threads)
-                    threadsInfo = m_threads.Values.ToList();
-                
-                foreach (ThreadWatchdogInfo threadInfo in threadsInfo)
                 {
-                    lock (m_threads)
+                    // get a copy since we may change m_threads
+                    threadsInfo = m_threads.Values.ToList();
+
+                    foreach(ThreadWatchdogInfo threadInfo in threadsInfo)
                     {
-                        if(!m_threads.ContainsValue(threadInfo))
-                            continue;
-                    }
-
-                    if(threadInfo.Thread.ThreadState == ThreadState.Stopped)
-                    {
-                        RemoveThread(threadInfo.Thread.ManagedThreadId);
-
-                        if(callbackInfos == null)
-                            callbackInfos = new List<ThreadWatchdogInfo>();
-
-                        callbackInfos.Add(threadInfo);
-                    }
-                    else if(!threadInfo.IsTimedOut && now - threadInfo.LastTick >= threadInfo.Timeout)
-                    {
-                        threadInfo.IsTimedOut = true;
-
-                        if(threadInfo.AlarmIfTimeout)
+                        if(threadInfo.Thread.ThreadState == ThreadState.Stopped)
                         {
+                            RemoveThread(threadInfo.Thread.ManagedThreadId);
+
                             if(callbackInfos == null)
                                 callbackInfos = new List<ThreadWatchdogInfo>();
 
-                            // Send a copy of the watchdog info to prevent race conditions where the watchdog
-                            // thread updates the monitoring info after an alarm has been sent out.
-                            callbackInfos.Add(new ThreadWatchdogInfo(threadInfo));
+                            callbackInfos.Add(threadInfo);
+                        }
+                        else if(!threadInfo.IsTimedOut && now - threadInfo.LastTick >= threadInfo.Timeout)
+                        {
+                            threadInfo.IsTimedOut = true;
+
+                            if(threadInfo.AlarmIfTimeout)
+                            {
+                                if(callbackInfos == null)
+                                    callbackInfos = new List<ThreadWatchdogInfo>();
+
+                                // Send a copy of the watchdog info to prevent race conditions where the watchdog
+                                // thread updates the monitoring info after an alarm has been sent out.
+                                callbackInfos.Add(new ThreadWatchdogInfo(threadInfo));
+                            }
                         }
                     }
                 }