We've come to similar conclusion (regarding source of the problem): http://jira.jboss.com/jira/browse/JBSEAM-2371 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4123950#4123950 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4123950