Hi I have a problem with my mac pro (it's a 3/4 year old mac pro, dual xeon 2.8) I just updated some software (elgato eye tv from 3 -> 3.1, and newest firefox, and iwork 09) and the problem is that couple minutes after the system starts, it freezes, and the fans (all of them) just starts on full speed, and it sounds like my mac will lift off. After that i've turn it off, because i don't want nothing to overheat or something... If I turn it on again, it happens again. What could be the problem? I'm running windows now on it and there is no problem yet, so i thing it has to be a software problem. could it be a virus? EDIT: It happend also on windows, after i've started soem software. so it must be hardware problem. Could it be RAM?