Hi! I recently sold my MacMini. It was registered to my name and I could see it on my registered product list. Now however it is not showing up there anymore and says it is registered under other ID if I enter the serial number. It is ok with me of course, just wanted to know how the buyer could re-register it without letting me know it I gave him the proof of purchase and wiped the HDD before selling it. So when he reinstalled OSX and started it for the first time there probably showed up that registration screen...did it allows to re-register users in Apple's database just so simply under another name? Just asking this because I am willing to understand how that works. Thank you!