I'm using JBoss 4.0.2 and 4.2.0 I wrote a Log4J Filter that I need to add to a Log4J appender. The Filter class is packaged inside a ear file. If I update the default jboss-log4j.xml in server/default/conf the Filter class is not visible. If I add a new log4j.xml and log4j.jar inside the ear file I could not find any way to tell JBoss to use that instead of the default one. Log4j.jar is still only loaded from server/default/lib and not from the ear. I tried to follow all the instructions in the wiki and forums, but classloading isolation does not seem to work. My ear file is made of ejbs and utilities jar. No webapps. Is this a known problem in those versions of JBoss? Thanks, Michele View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4065820#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...