I just bought my last Mac, it is the 11th apple device that we have currently in use in our family. (And I have used more before) This Mac came with a free Lion upgrade, however the online registration system said that my Mac did not have a valid Serial no. I called Apple support who said: "no problem this is a system bug we will solve this for you". It took them more than 30 days to solve this with the result that when I was able to apply for the upgrade it was too late. I got one answer which said: The order cannot be processed because it is longer 30 days since purchase. Now it is not about the money, if they would have said from the start that I needed to purchase the upgrade I would have done so. But now I feel like I've been fooled on purpose which is a total show stopper for me regardless of the quality of the products. So apparently I just bought my last Mac.