Yes the version currently in AS 5.1 is 1.4.3.GA. 1.4.4 is for AS 4.x. We didn't test it against AS 5.1. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4234431#4234431 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4234431