First of all, you abolsutely must register an error listener if you want to recover from problems. Usual reasons for this pong timeout are: - long garbage collection times in one of the participating JVMs - delays in the database when you use jdbc persistence - network problems - os virtualization freezes (like vmotion) Greetings Bernd View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4258500#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...