I sold my white mb (current gen) last week and just bought a new, sealed mba off ebay for 1520 shipped. I'll be testing the machine thoroughly once it arrives (in about 14 hours ), but if I do run into some physical problems, will I have any trouble bringing it into an apple store to get it fixed under warranty without an original receipt? i guess my question can be generalized to people who receive macs as gifts and then need to do some type of warranty work to it. the person i'm buying it from received it as a birthday gift, but already had a laptop. how does the process work? i searched the forum, but the results were totally off topic.