I have just purchase a refurbished macbook air 2010 from Apple.com two weeks ago. I'm now traveling in China and won't be back in the state until end of Nov. The fan have gotten very loud today. I didn't have this problem before. I just started notice it today. Could you guys advise me if this is a problem or it's normal? if it is abnormal, should I be contacting apple in China or State?? Thanks!!!!