"genman" wrote : There was a change... | http://www.jboss.org/wiki/Wiki.jsp?page=ClassLoadingConfiguration Not quite sure what has changed. I know the default for JBoss 3.2.x and prior is the Unified ClassLoader, whereas after its a hierarchical class loaded. But, either way, shouldn't a library within the WAR be loaded and available? The only thing I can thing of that may explain is that they changed the class loader for Tomcat itself. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3985412#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...