nobody who could give me any hint what to do?
Have you tried to delete the richfaces jars from your application?
thank you very much, Adrian.
I have removed the three richfaces jar from the deployed-jars lists and it works.
I thought that seam would throw classnotfound exceptions without those jars, but I know better now.
Great forum, great users :D
Also remove all the Richfaces lines in your web.xml ;)