i could not figure out why my brand new LOCKED 5870 somehow got overclocked after installing the 10.3 press release driver. it upped to 965 / 1350 if i recall. it rain fine actually, stayed very cool under 60C.. to fix i just downclocked it and bck to normal. THEN.. My new 5970 arrived. so i put 10.3 press release driver on that too. i could not figure out why it was running so hot (up to 76C in extended battlefield on all maxed out settings).. the netxt day after heavy gaming, i noticed a flicker on all of the gun textures, almost iike my board was f'd up - change res it went away, then changed back to 1920x1200 and it was gone - wheew.. so then i looked and the clock was at 850 / 1200.. and that is pretty high for a 5970. and i would have NEVER touched the clock on my brand new board. that fucking preview driver!