I think you have a stray older log4j jar file somewhere, perhaps in the JDK's endorsed directory. I suspect this because the TRACE field was added to log4j only recently (can't recall in which version off-hand). You need to locate and remove that older log4j jar file. (Don't remove the log4j jar that comes with JBoss, that one is the correct one.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088517#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...