here's my situation. i need a PowerMac very soon, i'll most likely be buying 2nd hand. i need to use Photoshop & other apps, as well as needing lots of RAM & HD space. so i'm looking at a Dual 2GHz minimum, but i've also been thinking that if i keep this for a few years i'll be wanting something up around Dual 2.5GHz. if i can get a 2.5 that's still in warranty, i'll purchase AppleCare (which is... 2 years, right?) so i might sell it while it's still covered. but if i got a liquid cooled G5 that was out of warranty, i was wondering what sort of costs i'd be up for if the liquid cooling unit failed? i'm guessing that it wouldn't be a cheap item... also - how do they fail. it's not like a whole pipe would blow off or anything? you'd surely notice it leaking at first, and maybe notice the temperature (hopefully) rising slowly, and be able to stop it causing major water damage? what are people's opinions on the issue of wheather or not to buy a 2nd hand, out of warranty, liquid cooled G5. worth it?