I've been struggling with this issue for some time with no solution in sight. Basically, I think I have an overheating graphics card and I tried to follow the steps given here
So I installed catalyst which is the ATI proprietary driver but my overheating problem seems to persist. My temperature is about 65 degrees C when idle and shoots up to 80 when I open up a couple of programs! I know it's not a dust issue because because everything runs much, much cooler on windows 7 for me. I'm sure it's a driver issue.
So I opened up the catalyst control center and I want to know what do I need to adjust in order to cool down the graphics card? I tried tweaking a few things but to no avail.
graphics card is: VGA compatible controller: ATI Technologies Inc M76 [Radeon Mobility HD 2600 Series] kernal version is: 2.6.38-8-generic #42-Ubuntu SMP ubuntu version is: 11.04