Hi, Looking at this forum thread: http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028373 I see an issue with the cache.remove() call being made in the afterCompletion() block of a Synchronization. The main issue here is that the current transaction is no longer valid by this stage (it has, by definition, completed). From a transactional sense, what is the purpose of remove() being called in an afterCompletion() block? Is it intended that this remove() happens outside of the current transaction (either in a new transaction or without one)? Cheers, -- Manik Surtani Lead, JBoss Cache JBoss, a division of Red Hat Email: manik(a)jboss.org Telephone: +44 7786 702 706 MSN: manik(a)surtani.org Yahoo/AIM/Skype: maniksurtani