just download jboss 4.0.5. with ejb 3 profile as mentioned in seam doc. the examples run fine in jboss. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4052265#4052265 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4052265