Thanks Francois, It seems you just mod'd the CallByValue semantics per your instructions: - default/deploy/ear-deployer.xml | - Isolated => true | - CallByValue => true | - default/conf/jboss-service.xml | - NamingService: CallByValue => true | - default/conf/jboss-minimal.xml | - NamingService: CallByValue => true This makes sense to do, however this references files that don't appear in my JBoss4.0.5GA - because I used the "jems-installer-1.2.0BETA3.jar" when I set up JBoss (and it re-arranges config files all over the shop for some reason). I used the jems-installer to basically turn on "EJB3" mode in JBoss 4.0.5GA. Is there a better way of achieving EJB3/JEE5 in JBoss 4.0.5GA without using the jems-installer (I don't like the way it mangles the JBoss config files) ?? Many thanks, David View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3984701#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...