I think we have quite different configurations. You seem to be using pre jboss 4.2 with myfaces. I ported my application to jboss 4.2 (jsf ri) and am using seam cvs latest. The Seam reference document says (chapter 21.1.3 "Seam servlet filters"): anonymous wrote : The Seam master filter must be the first filter specified in web.xml. This ensures it is run first. | Adding the master filter enables the following built-in filters. and it lists the following filters (including the exception-filter): exception-filter, redirect-filter, multipart-filter, character-encoding-filter, and ajax4jsf-filter Nevertheless, I'll give it a try and explicitly configure the filters in web.xml. tazman View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4049270#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...