If you run TX1 and TX2 with org.jboss.cache logging at TRACE it should shed some light on this. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4222764#4222764 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4222764