My GTX 295 keeps GPU2 clocks in 3D mode all the time while GPU1 clocks goes into 2D mode (400/600/100) when idle. It only happens on Vista, just tried XP SP3 and the clocks are ok, switching between 2D/3D clocks as it would be, but not on Vista. Is that a driver bug? Tried 182.08 WHQL, 182.46 BETA and 185.66, all of them showns the same behaviour. Maybe it's a Vista issue?