Hello, I have finally beeing able to find a testcase which is 100% reproduceable. I opened a Bug for this: https://jira.jboss.org/jira/browse/JBAS-6412 However, reading the source code, I am quite sure there are more possible places where the "receiver" can get lost. After all the event of a new message travels across a few Executor Pools and has quite some database interaction. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4204400#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...