Hi edek5472, I had the same problem... I think classes for your bean are loaded from different resources (one in .../lib and one out of the ear-file). Two instances of one type are different, if they were loaded through different class-loaders (e.g. different resources). I'm sorry, but I have no solution found yet... Hope that helps... Carsten View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4020544#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...