I just recently bought an EVGA GTX 560 superclocked so overclocked right form the factory. Nothing else on my system is overclocked at all so this is the only potentially unstable component due to overclocking. I get this random freeze every here and there and have to hard restart to unlock. It doesnt happen very often but it for some reason only happens when im on google. Idk what else it could be other than the overclock since my gtx 260 i just upgraded from didnt have these problems. thoughs?