I have a bit of a dilemma. I'm selling my Mac Pro and always intended on buying the Lion Thumb drive to clean install Mac OS Lion (Mountain not compatible with my Mac Pro) but that's suddenly disappeared from the Apple Store website! I take it the only way to sell a Mac without a OS that's linked to your Apple ID was to buy one of these drives but now I don't have that option and I'm stuck. I could make a USB drive from my Lion installation but wouldn't this be linked to my Apple ID. Any suggestions?