Just a shot in the dark, but are you using myfaces + state saving=server? If so, it is a known problem with myfaces. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4057852#4057852 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4057852