I may have missed this someone in here (if so I'm sorry to hash out the same ground over again)... But... If I have multiple mac's in my household... will I have to purchase multiple copies of Lion? Is there some kind of option to pass it from computer to computer within a limited window of time or something? Again I'm sorry if someone else already covered this.. or if I'm completely daft and it's been all over the news, but I haven't seemed to have come across anything that specifically addresses this.