This looks very much like a bug. I've tried some scenarios to reproduce it, but couldn't. Can you please post your configuration, and also some code to describe the cache access pattern in which the failure occurs (tx is started? am I doing a get on a non existent node?) A unit test to reproduce the issue would be great! Thanks, mircea View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4132915#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...