I forgot: the Application EAR file is about 10Mb and there is no firewalls whatoever between those nodes. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4029646#4029646 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4029646