Computers use power which turns into heat which warms the unit. Not a bug but as you will discover, laptops of similar caliber all warm up with use.
This annoys the heck out of some consumers.
I work on an Acer TravelMate 2410 and after a while the whole machine gets warmer and warmer. I checked for viruses, spyware etc. everything is ok. I run it via outlet power, not battery.
What could be the cause?