OK, I see the debug statements in 4.0.3. This means that the app server caught an exception and is now throwing another exception. Unfortunately, the exception stack trace does not get printed out until after this processing is done, so I cannot ask you to look for a stack trace - there is none yet. I know that there will be a lot of threads, the question is what are they doing? Try this. Take a thread dump, wait a minute, take another. Compare them. Look for threads stuck in application code, or doing anything other what waiting on input queues. Finally, this is the web services forum, not really the proper place for this question. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4107444#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...