Hi, I've had my MBP about a week, and it's my first Apple product. I've been using it for about 90 mins (just a bit of browsing in front of the TV) and suddenly there's hot air pouring from the back of the laptop! It started running noisily too, but in the time it's taken me to come over here and post this it's quietened down a bit. I assume it's a fan making the noise. Does this sound normal? I've read on here something about overheating issues. I hope it's okay! Is there something built in that would tell me what the temperature is, and whether it's overheating? Thanks for any help. Edited to add: minutes later the fan (I assume) has come on loud again. I d/loaded iStatPro the other day and it says Fans Exhaust 1999rpm. I'm not sure whether that's good or bad. Temps are: CPU 81 HD: Macintosh 31, and various others.