You should set the SFSB timeout LONGER than the session timeout (try twice as long), not the same length. And check if your @Remove method (or its interceptors) is throwing an exception. This is the most likely explanation for the problem. There is a bug in JBoss EJB3 that means an exception that occurs while removing an SFSB results in a NoSuchObjectException. Use your debugger to check this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991529#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...