I meant that you can check with cpufreq-info what the governor really does.
I've just found that the laptop has a Core 2 Duo T6570 which is Pentium. These processors are known for "you will not need a heating for your office as long as the computer is running".
In fact, it is possbile that the Debian-based distributions have other settings (what ever) than others. There are two ways for you to go: 1. find out what it is or 2. use a distro which is not based on Debian.
If you really want to use Debian or Ubuntu, you'll have to find out what's wrong. You may for example compare the kernels, but since they all patch their kernels this isn't easy.
BTW: install Slackware, you will never need another OS. We have a very knowledgeable and helpful community here at LQ http://www.linuxquestions.org/questions/slackware-14/
and you will find much information in our new SlackDocs wiki http://docs.slackware.com/