I have the dell inspiron 1525, Honestly I treat it like a desktop, I have had it for a little under a year, I leave it on for days at a time, I do have a cooling pad for it, along with the everest program to check out its stats when I feel something isnt working properly. Just yesterday it shut off from overheating for the first time, I took the entire laptop apart and found a giant clump of dust stuck in the fan. Needles to say when I put it back together it worked better then before and has been on for about 18 hours straight again. Knock on wood, the dell inspiron 1525 in my mind is a tank, a tank in a plastic frame..but I have dropped mine, fried the optical drive, burnt the right rear USB's up, and completely dissected it more then once, yet it still keeps running. But my advice to keep it from shutting down from overheating...Try to take it apart and remove the fan and clean it (dust can get trapped in hard to reach spots causing resistance or failure of the fan) Or you were just unlucky enough to get one that runs hot, so check out the web for a more powerful fan.