Some good thoughts here. Keep in mind though - as per the original topic - that any talk of versions should actually always be a List of versions, pertaining to each node in a path given. Jason, regarding the deadlock potential, I think that potential exists anyway with any such cache usage. I think the early deadlock detection algorithm we spoke about in FL makes a ton of sense and should be implemented, but that is orthogonal to this discussion. :-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165130#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...