Hi I happen to have a Late 2007 MacBook Pro (The specs are in my signature). My model was also the one affected by the 8600Gt issue so I had taken to a nearby Apple Reseller in Dubai in 2008. It's been months since that happened. However, I've been monitoring my CPU & GPU temperatures and I'm still confused about what is ideal and if I should be worried about anything. (I took a screenshot of my iStat readings and there's a difference of atleast 11C between the GPU Diode and GPU Heatsink) Is there anything alarming that I should be worried about?