When i try to install lion, it says i have to type in my apple id and password, when i do a message pops up that says; This apple id havent bought Lion, you have to log on with the ID that was used to buy lion. The problem is, Im 100% sure that i used the Apple ID that i typed in, an ive searched the internet, and i found some people having the same issue... could it be that appstore is down or something?