It could be that the jbpm timer clean up code is not synchronized where parts of jbpm are still hanging on to the completed timers. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4268198#4268198 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4268198