I looked at your code and see that you use a static for the JbpmConfigiration. Good, so that part is optimized. It could still be that since your code runs on the node-enter, that the async stuff is to quick and tries signalling the node/token while it is not persisted. Strange behaviour could occur then as well. I advise again to look at the jBPM async stuff.... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3962304#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...