Another issue I see with the state transfer approach is that we need to run the flush protocol *once* for each state transfer. Unless we can have the coordinator start and stop the flush protocol, this might be quite expensive. Regarding deadlocks: we could wait until JGroups 2.5 is in place; with the threadless stack and parallel and out-of-band processing, deadlocks should not occur anymore. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3995809#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...