I was told that in JBoss anyway, the developers have spent a lot more time optimizing EJBs. I haven't run any tests yet to confirm this though. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4121670#4121670 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4121670