Today I’ve found this page, I have to admit this guy is indeed clever!

Laptop Cooling. It is the strangest thing that all laptops have the same design fault. If operated on the “lap”, the needed cooling will be blocked off, it will overheat, and may eventually abruptly halt. Here’s how I modified mine so the machine would cool properly. Click on any picture for a larger size view.

Check it out!

http://1journey.net/1candle/cp/cooling.htm