I didn't understood why all of a sudden, Feisty has become "heavy" as have suse and mandriva.... well, suse was already heavy to begin with. tried: Mandriva 2007.1 (spring), Opensuse Gnome 10.3 beta 2, Ubuntu Feisty and Gutsy...
I used
acpi -t to track the temperatures and I was able to reach 87 Celsius degrees and have occasional shutdowns (+90 degrees)...And yesterday I found out why.
My laptop's cooling ribs were clogged up for good - I even found a feather there. I disassembled the largest panel in the back of the laptop and then just the fan (without the cooling ribs). I used a slightly wet cue-tip to clean the fan side of the cooling ribs. The amount of dust there were unbelievable!
Now I'm glad to say that it's working again at nominal temperatures. WinXP in Virtualbox helped me reach a nice temperature of 67 Celsius degrees. It's sad though that if I ran Firefox into a site with a rich flash content - I'll reach 75 Celsius degress, which is much higher then running a virtual machine. Someone have to make the flash plugin better!