Hi Charly, i see.. i have downloaded jboss 4.0.5, probably it was built using java5... thanx and regards marco View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013114#4013114 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013114