The laptop market seems to be taking a few forks.
-> Laptops for occasional usage.
-> Desktop replacement models.
The desktop replacement versions are a bit bigger and are meant for 8 hour stints. Many units are built for hour long usage.
Given the nature of your issue, and the possible burn and fire hazard, have you contacted the laptop's service center to hear their response?
I Own a Fujitsu E-7010 (P4 1.8Ghz), when the processor is busy at 100% rate ( for example when running a pc game), the device gets really hot, and the heat that comes out of the fan is so hot that if you hold your hand for more than 5-10 seconds it will somehow burn!!
is this normal in notebooks?