I upgraded my laptop to ubuntu 12.10 and my laptop temperature went extremely high. It's over 80 degrees Celcius on idle and it can easily go to 87C with just a little browsing. On 90C my laptop shuts down. I am pretty sure it's 12.10 problem because I didn't have this problem with previous releases. Also, I have dual boot with windows Vista and when I boot it, the temps are normal.
My CPU is Intel Core 2 Duo T8300 and my GPU is Ati Mobility Radeon X2300
thanks for your time!