I think you'll find many people with a $5000 Mac Pro 1,1 are on Lion. Even the oldest Mac Pros are fast, faster than some of Apple's latest machines. My Mac Pro 1,1 runs Rage at 40fps no problem, but it needs Lion. What happens when apps are updated to require ML, and autoupdate and break like Apple's botched iPhoto update few weeks back? As I said before and you ignored, why could they support machines for 7 years in the classic era, but not now on a modern OS?