On Thursday 26 August 2010 02:11:44 Alex Schuster wrote:
> I think I just found the problem! I decided to give the open source ATI
> drivers a try again, and replaced 'fglrx' by 'radeon' in my xorg.conf. And
> all is fast now. Wow. I had already forgotten how fast a desktop should
> be.
> 
> I'm not yet sure all is fine. On the first start, kwin crashed and all
> windows were on the first desktop, this never happened before. But it's
> working on the second login. I have no direct rendering, Xorg.0.log shows
> (EE) RADEON(0): [dri] RADEONDRIGetVersion failed (libdri too old). I had
> this before with xorg-server-1.7.7, now I'm emerging 1.8.2. Stay tuned.
> 
> 	Wonko

Ok, looks like your video-driver was using up too much resources.
Either with all the desktop-effects or with something else.

I can't help further with ATI-issues as I don't use them myself.

I do know that I need to change more then just the driver in my xorg.conf when 
using nvidie-drivers. Am wondering if your crashes occured because of a 
similar issue.
Eg. the "dri" module is only for the ATI-driver and not for the open-source 
one?

--
Joost