I am currently usign the JBoss4.0.4 and the EJB3 release that is included with it. I have been using this http://docs.jboss.org/jbossas/jboss4guide/r4/html/cluster.chapt.html as my basis for understanding how jboss clustering works, but I think my understanding of it may be wrong. I am currently running with a cluster of two app servers on the same partition called app1 and app2. Here is my test: 1. My external client program connects to the cluster via HAJNDI(port 1100) and gets a client stub to a session bean by doing a lookup on an initial context. 2. It then makes some calls to the ejb using this stub and caches the stub in variable. 3. I see which of the app servers handled the request and shut it down but leave the other one running. 4. Now I use the stored stub on the client to make the same call to the cluster as before but it fails. any help with this would be greatly appreciated. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3973033#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...