On an up to date rawhide system, kernel-2.6.25-0.204.rc8.git4.fc9.i686 crashes with the nouveau x11 driver configured after rhgb exits. It doesn't happen with kernel-2.6.25-0.218.rc8.git7.fc9.i686. Screenshot of the tail end of the crash included next.
Created attachment 302121 [details] screenshot of kerne panic