I posted this in the installation/configuration forum and was advised to post it here. http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4221706#... Have a sample application deployed in JBoss 5.0.0. GA. Everytime, the user logs out from this app., JBoss throws java.lang.IllegalStateException: Security Context is null. This does not happen with JBoss 4.2.3 Full stack trace is also available at the link posted above. Thanks View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4222097#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...