I just upgraded to a 15" PowerBook from my 12" three weeks ago. 512mb original ram, with an additional 512 stick in the other slot. Tiger, up to date. Etc. All that stuff. The thing that I noticed is that this thing will get so hot while being used, that I could probably fry stuff on it. Especially near the bottom area of the screen. Is this normal? My 12" never really got this hot, and it's smaller = less heat dissipation inside. The other day I was trying to relax by leaning back on my couche and putting my powerbook on my lap, and it almost burned my legs. So yeah, I just want to know if this is normal and also if those laptop cooling pads/usb hubs actually help. Thanks. Oh and lastly, how do I check which revision PB i have?