I tried this on my 2009 27" i7, and after what seemed like a delayed reboot, got a very non-functional system.
3D acceleration couldn't be started, and kextHelper hadn't properly backed up my extensions (it had a hard freeze after the "cross your fingers" message) so I couldn't restore them selectively. Time Machine was also broken, due to its 3D interface, so I had to restore backup from DVD.
I installed all kexts in the .zip file, since they were all ATI-related. The filesystem did show all the kexts being updated before I restored, but obviously something went wrong somewhere. Anyone know if I should've been more selective, or what?
<------ Ser nu att jag inte är den enda som har detta problem. Min beter sig exakt likadant!
Hmm jag var helt säkert på att os x var upp to date. Möjligen inte? Jag körde en update och den lade in 8st totalt. Nu verkar jag ha kring 1200 som alla andra. Så ja antar att det funkar nu!
Lycklig pojk! Så till er som får kring 20 fps efter att ni lagt in det. Prova med en update. Funkade för mig!