So, here's the situation: I have a Rev A. DP 500, and it crashes and eats hard drives like crazy. It's been into the shop for applecare service for two straight months. It's had the hard drive replaced (3 times), and the power supply replaced. The techs insist that everything checks out okay (processors, logic board, etc). But it still crashes like mad. Even with only a clean install of jaguar on it, no apps. Now nobody can figure out what the problem is. So, my question is, at what point does Apple just give you a new computer? And would they give me a dual processor since I currently own a dual?