I bought my MacBook air for less than one month. I have not dropped it or placed anything heavy on it. There is now a cracked on my screen which is internal with no visible crack on the screen. I have not applied pressure on it. I have had other lap tips previously which did not cause me problems like this. I was told that apple products are stellar . I was convinced and happily spent more than what a normal android laptop would have cost me. I bought my lap top in Singapore .