hi .. just wondering if this is a known problem? just installed rivatuner and followed the guide to make fan speed changes and overclocking profiles... the fan works great... but i have a slight problem with the overclocking profiles? i made 2 profiles.. a standard 2D at the standard 8800GTS speeds..... and a 3D one at 620 / 1000 .... the problem is that when i apply the 3d clocks.... it jumps up to the required 620 / 1000....... but when i apply the slower 2D profile... the core drops to 513..... but the memory stays at 1000 .. same if i have the monitoring up... if i start a 3d application.. the core auto jumps to 620, and the memory to 1000... but after it returns to 2D the core drops to 513 but memory still stays at 1000.. the wierdest thing is though if i look in nvidia control panel..... it tells me my core is at 620 and mem at 1000....... even though rivatuner is saying the core has dropped to 513... any ideas which is correct? and how to fix it please? thank you for any help.