Interesting... what may be the difference between your 7950 and mine? Is there
a dev who has any clue? If you want I can make a video, I don't think you
realize how *SLOW* it is, you can't even type something in Konsole without
going crazy :)

I just switched to fglrx after 4 years with just FOSS drivers and KDE is quite
fast (but not as fast as with my HD4000), anyway even the slow radeon was
better than fglrx in Left 4 Dead 2 (framerate is high with fglrx but still the
game is unplayable).