i think its pretty commonplace for people to leave their computers on all the time these days, with power saving modes and what-not. i've done it for years. but i was sitting at my computer last week, and all of the sudden thick white smoke started pouring out of the back of my LCD. granted, it was a pretty old LCD, at least 5 years anyway. i immediately unplugged it and got it out of the house and it didnt intensify, but it shook me up quite a bit. if i was in the living room watching TV with my son, or cooking dinner, or anywhere other than in the room when it happened, i might not have a house right now. this is probably (hopefully) a rare occurrence, but you might want to think twice about leaving your machine on all the time, as it could quickly turn to disaster. the upside is, i now have a fucking giant 22" widescreen that was on sale at newegg, upgrading from a 15" standard, hehe. i bought the old LCD secondhand, and i cant find a brand or model number on it anywhere to give specifics to look out for, but i think a general heads-up might be in order.