I want to upgrade from JBoss 4.0.5 to 4.2.3 but I face more and more problems all the time with my web applications. File upload component (Sun's web ui library) stopped working (with no error messages!), some of the components started returning nulls as values and I got character encoding problems, even with using Filter to change request encoding.
Is there any document explaining in the steps, what should I do in order to switch without paing from Tomcat to JBoss Web Server?
I run it on Windows 32-bit and my web-apps use JSF 1.2 framework (with MyFaces)