Appalling desktop performance in F8

[Alan Cox]

> I'd appreciate knowing if anyone else has had similar problems before I roll
> back to F7.  It is possible that I am having hardware problems, so the F7
> roll back may not help.

I am seeing some similar problems with gnome based FC8 applications
leaking memory horribly which they didn't do before. Not quite the same
as you report however.

Is there anything logged in dmesg when your system stalls ?