The use case is using a MC bean from a registry which is by nature not MC aware. For example JNDI and Remoting (ServerInvocationHandler). Other use cases are passivation of objects which might contain references to MC beans. For example I might have a reference to a MC bean in a web session. (I think this translates to being able to have a serialized reference to a MC bean itself. But to facilitate that the MC bean would need a serialized reference to the Kernel.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4151975#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...