I bought my 27" i7 iMac in the middle of April. I've started to notice that the hard drive is being pretty noisy lately. I never heard the hard drive on my previous 24" iMac, so it is kind of annoying to me. Would Apple swap out a new hard drive for me at the store if I took it in or would they tell me that it is "in spec"? I don't want to lug my iMac to the store if they wouldn't consider it something worth fixing.