I have a 4 month old, 13" Air (bought brand new) and light horizontal lines are showing up in most areas of the screen. I contacted Apple and they said I qualified under the warranty for hardware repair, but that I would have to leave my laptop at the store while they fixed it. As a first time Mac buyer who spent $1,500, I'm a little upset to say the least. I don't want a refurbished one and I don't want to wait, as anyone who depends on their laptop knows 'a few days' isn't acceptable. The tech support guy from Apple said they would only give me a new one after 3 separate repairs and that other than that it was up to the store manager, but that there was no chance that would happen. Any advice would be appreciated.