Trunk seems to be starting the war before the ejb3s are started. This causes a problem, as Seam uses a ServletListener to boot itself, and can try look up EJB3s using JNDI (as described http://docs.jboss.org/ejb3/app-server/tutorial/jndibinding/jndi.html). This is reproduced by running cd jbossas/testsuite | ./build.sh _jars-seam | cp output/lib/jboss-seam-dvd* ../build/output/jboss-5.0.0.Beta4/server/default/deploy | cd ../build/output/jboss-5.0.0.Beta4 | ./bin/run.sh You should get a NamingException from Seam, as it fails to look up the EJB3. Note, the deployment order is different if you deploy to the already running app server. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4123612#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...