I went into the Apple store today to buy a Mac Pro. They told me that Snow Leopard was not pre-installed, but they would give me the upgrade disks. This made me wonder if I would be buying "old" hardware that is not fully optimized for Snow Leopard. I have waited months for Snow Leopard so can wait a bit longer. Should I wait until they start selling machines with Snow Leopard pre-installed or will there be no difference. Note, I am not worried about the upgrade process, but the fact that they are selling me their "old" inventory. I would appreciate any comments.