Hi Jaikiran, My webapps use a shared utility jar : commons-httpclient-3.0.1.jar. But this is not loaded first. Instead the commons-httpclient.jar is loaded which resides in the JBoss shared lib dirs. As a result i get method signature incompatibilities - i.e. different interfaces, etc. This contradicts with the options: false and false As you can see, both of them are turned off on my configuration. This is actually the default setting for JBoss 4.0.5. Is this a bug? Thanks. Best Regards, Angel View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4018483#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...