ubuntu 12.10 very high temprature on idle

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http://askubuntu.com – 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 Any suggestions? thanks for your time! (HowTos)