Here is my image from speccy. It seems that Intel C6 Sleep really helps a lot in making the computer extra cool and thus "faster". =)
I use the graphics media accelerator 4500MHD and my hard drive temperature hovers around 27 C
By the way, bassfisher, I don't get something. How come your speedfan shows -128C? Isn't that degree of cooling impossible?? =.=
To bigseb:
Your computer definitely has an issue with dust or your fan. If you don't want to buy a bottle of compressed air though, you can always remove the cover and remove the dust near the fan manually. I do that all the time =D though doing so might void your warranty.