I developed an application using JBoss Seam 2.1, RichFaces 3.3 and JSF 1. I used the standard Seam Authentication and when accessing the login form in IE8 or Firefox, the form rendered just fine. Now that I have upgraded to JBoss Seam 2.3, RichFaces 4.3 and JSF 2, the same login form will not render in IE8, but it still renders just fine in Firefox. Any thoughts or feedback will be much appreciated.