And when you try it on jboss-4.2.3 and do listInProcessMessages you see the unacknowledged messages? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4166655#4166655 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4166655