I agree there about the 9800Pro users (being one) and to be honest 5.1 was CRASHING my machine, damn games were locking up for 10-20secs, the damn computer froze on me altogether once. It just DID NOT work properly. Now I know that my be some hardware imcompatibility with some other part (most likely my tv tuner) HOWEVER I don't expect that I should have to lose anything else in my system that works fine on 4.12 JUST to install 5.1. Hence I hope 5.2 does NOT do the same thing otherwise GRANDFIREBALL no jutsu for dem catalyst drivers. Next time I will proly go BACK to Nvidia, at least they can write drivers that don't take up 28MB as an installation file.