Having read Mossberg's reports, and strictly out of curiosity, I decided to try to upgrade an older Tiger iMac to Snow Leopard using a new copy of Snow Leopard which came bundled with a brand new MacBook Pro. (Incidentally, I have no desire to commit piracy; I have purchased a family pack of Snow Leopard to Tiger upgrades for $199 off Amazon.com to upgrade all my other computers; I just wanted to try this first to see if stories are true). After inserting the Snow Leopard (bundled) disk, the expected dialog popped up telling me that I could, indeed, upgrade Tiger. The computer rebooted and apparently began the installation process. Surprisingly, after about 10 minutes, the install quit and a message popped up saying "OS X Cannot Be Installed On This Computer." So, I guess my question is, do you all think that Mossberg and company's having let the cat out of the bag caused Apple to go back in and install some kind of Tiger detection process? This bundled disk arrived less than a week after the first reports that Snow Leopard was able to upgrade Tiger. Or is there some difference between a bundled copy of Snow Leopard and an "upgrade" disk that I'm not aware of? Anyway, interesting.