I have i8kutils installed and have noticed that my inspiron e1405 runs about 10-15 degrees c hotter than in windows without particular load.
I don't run Beryl or any other cpu intensive program.
The only thing I can think of is that I run uTorrent in wine. But it's such a small app I can't believe it's the problem.
So far I've been getting very quick replies, thanks to everyone in this great community!