Thanks, Greg. TBH I'd be very surprised if this were a Jetty problem. "northgorky" wrote : | - What's getting done to/in the classloader that is causing it to fail this spectacularly? Its almost like its been told to clear itself of all classes, and clear the parent classloaders as well. | That's the big question we're trying to figure out. "northgorky" wrote : | - How do you get a ClassCastException on a ClassNotFoundException? (Seeing this one quite a bit) | Not sure what you mean. You've mentioned other failure types beside what you've linked; please provide details, maybe they will provide a clue. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4138841#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...