Index: lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java,v
diff -u -r1.65.6.2 -r1.65.6.3
--- lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java	10 Jun 2009 05:28:30 -0000	1.65.6.2
+++ lams_tool_forum/src/java/org/lamsfoundation/lams/tool/forum/web/actions/LearningAction.java	10 Jun 2009 07:53:24 -0000	1.65.6.3
@@ -642,7 +642,7 @@
      * @return
      * @throws InterruptedException
      */
-    private ActionForward replyTopic(ActionMapping mapping, ActionForm form, HttpServletRequest request,
+    private synchronized ActionForward replyTopic(ActionMapping mapping, ActionForm form, HttpServletRequest request,
 	    HttpServletResponse response) throws InterruptedException {
 
 	MessageForm messageForm = (MessageForm) form;