Casting to my the underlying remote-interface results in a class-cast exception (that was the primary motivation for this thread....). Adding all client libs from 5.10GA did solve the problem but adding always all libs in my J2SE-client-application is not my aim because i'll distribute it using JNLP (it's about 40MB). But nevertheless it's really curious that my primary JAR-combination works fine but returns wrong interfaces. Thanks Daniel View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4235799#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...