So, I've been looking at buying a laptop to replace my main comp. I like the idea of being able to take my primary PC over to a friend's house, etc.; the only thing that would really suffer is gaming, and I'm doing a lot of that on consoles these days anyway. The thing is, my PC is on pretty much constantly due to certain applications I have running. Can that be done with a laptop? I seem to remember reading comments about laptops overheating and such when left on for long periods of time. Is that true, or is it only true when left on a vent-blocking surface such as carpeting? Will the hard drive and other internals stand up to near-constant use? I'm hoping that some of you have experience with this. TIA! 