Looks like you are using 4.2.3 with JDK 6. There are two binary downloads for 4.2.3, one for JDK 5 the other for JDK 6. Did you download the correct one? Oh wait, you downloaded neither but got it from another site - is that what you meant by your slackware comment?. If so, most likely they are packaging only the JDK 5 version. Therefore, try using JDK 5. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4192651#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...