In JBoss 4.0.4 Quartz works fine but in 4.0.5 I had the same problem View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3992888#3992888 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3992888