Try taking a few thread dumps during the 100% CPU time, that might help pinpoint the code causing this issue. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240812#4240812 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4240812