At this point I am using Fedora Core Linux more out of inertia than anything else. Every time I update, there is always a bunch of thinks broken.
The update from FC4 to FC6 went pretty smoothly.
This site has lots of info about how to fix things up after installation: http://www.gagme.com/greg/linux/fc6-tips.php
I got a conflict on ffmpeg between linva and FC6, clearly conflicts between these repositories. So I disabled the extra repos and the uninstalled mplayer and mplayerplug-in.
Once again, the scroll wheel is not working... http://freenet-homepage.de/obauer/fc2.html