JBossWEB has now it own implementation of Comet the TC6 one can't be used. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4158253#4158253 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4158253