Facing same problem with JVM 6 + JBOSS 4.2.3 GA+ JBPM 4.0. Dealing with it right now. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244567#4244567 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244567