anonymous wrote : Then you can prevent this "race condition" from happening in the first place? The server side doesn't know about failed Connections... it will send the callback as soon as the view was changed. To replicate this race condition I had to disable Lease on the client side. And have connections opened on different servers. Maybe it wouldn't occur in regular circunstances, but I wanted to prevent such behavior. The guess routine could find the right failoverServer fixing the race condition. Holding the update somewhere waiting failover to perform on all connections would require a lot of coding... while the simple guess routine could fix the problem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4002952#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...