diff --git a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
index 89f1c49836..96da0a8035 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
@@ -86,6 +86,10 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         /// </summary>
         private int m_StartDelay;
 
+        /// <summary>
+        /// Are we stopping scripts co-operatively by inserting checks in them at C# compile time (true) or aborting
+        /// their threads (false)?
+        /// </summary>
         private bool m_coopTermination;
 
         private int m_IdleTimeout;
@@ -242,7 +246,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             m_ScriptConfig = configSource.Configs["XEngine"];
             m_ConfigSource = configSource;
 
-            string rawScriptStopStrategy = m_ScriptConfig.GetString("ScriptStopStrategy", "abort");
+            string rawScriptStopStrategy = m_ScriptConfig.GetString("ScriptStopStrategy", "coop");
 
             m_log.InfoFormat("[XEngine]: Script stop strategy is {0}", rawScriptStopStrategy);
 
diff --git a/bin/OpenSimDefaults.ini b/bin/OpenSimDefaults.ini
index 995768a8ce..7ccc5fc623 100644
--- a/bin/OpenSimDefaults.ini
+++ b/bin/OpenSimDefaults.ini
@@ -1427,12 +1427,13 @@
     ; DeleteScriptsOnStartup = false
 
     ; Controls whether scripts are stopped by aborting their threads externally (abort) 
-    ; or by co-operative checks inserted by OpenSimulator into compiled script (co-op) 
-    ; co-op will be more stable but this option is currently experimental.
+    ; or by co-operative checks inserted by OpenSimulator into compiled script (co-op).
+    ; co-op will be more stable as aborting threads can cause instability.
+    ; abort was the default option in OpenSimulator 0.8 and before.
     ; If this setting is changed between co-op and abort, then existing scripts will automatically be recompiled if necessary.
     ; However, the setting change will not take affect until the next time you restart the simulator.
     ; Setting changes will not affect state information stored for scripts.
-    ;ScriptStopStrategy = abort
+    ScriptStopStrategy = co-op
 
     ; Rate to poll for asynchronous command replies (ms)
     ; currently unused