Let me give you a better example: I have 2 clusters (A: 192.168.1.1 and B: 192.168.1.2) on each of them i installed your test application ReplicatedCounter http://wiki.jboss.org/wiki/Wiki.jsp?page=ReplicatedCounter by changing ip address in my local file "hosts" i can access each cluster using the same url in my browser: http://myapplication:8080/counter i restarted both applications. On cluster A i refreshed the counter page 10 times (Counter = 10) switch to cluster B (by changing ip address in "hosts" file ) refreshed the page and I got Counter = 11 (so far replication is working correctly). Been on cluster B i increased counter up to 20 and switch back to cluster A. But now i see 11 again. (should be 21) . As i can't see any exceptions in log file. Any idea what i am doing wrong here? Thank you, Michael View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3964232#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...