thanx for your very clear answer. i have worked with OSGi in the past. i still feel that it could be a great enhancement to application servers to provide dynamic loading and a controlled and fine grained 'exposure' mechanism. but it's def. not something you introduce in an infrastructure like jboss in a short time :) kind regards koen View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4081566#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...