If you're interested Gavin, the form that generates such a huge amount of state information can be viewed here... http://www.gradview.com Just click the "Register" link at the top of the page. Of course, I'm not using client side state saving, since that's a production site, but you can see that the form really isn't all that big, and it does indeed generate around 9 megs of state information. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3982084#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...