The biggest problem I have with JBoss is Java Server Faces. The newest versions of the application server (4.2+) use Sun's JSF implementation which leads to ClassCastExceptions with many JBoss projects using MyFaces. This is a big deal! Projects like jBPM, Seam, and Portal are left with broken examples and poor documentation on handling the change. Deploying jbpm-enterprise.ear to a newer JBoss AS throws ClassCastExceptions. Does anyone have suggestions? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4094673#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...