Ok, sorry for the caps in the title... i have an older imac, the first core 2 duo imac that came out (2.0ghz and an ati 1600 card in it) since leopard i have the same problems as alot of other people however i just recently found out that it was heat related and so since the machine is pretty damn old i am way out of warranty even if i had applecare for 2 years (computer was bought in september of 2006) so i downloaded smcfancontrol and am running it at these settings: ODD: 1506 HDD: 1729 CPU: 1494 so far there are NO LINES, and very very few other hiccups. this was causing alot of issues as the computer would sit and idle, and eventually it would need to be reset. is this safe? i dont want to destroy my fans. anyhow, the other question seeing as i live in the desert is. how much dust builds up in these computers? should i consider dissasembling it and cleaning it out? and will apple just laugh at me if i ask to have it fixed at a reduced rate or anything like that? i mean, this was their update that broke my computer.