I had my late 2011 MBP for just two weeks now and randomly a very (REALLY) loud click comes from the HDD. I don't want to take it in to the Apple store because I can change the HDD myself without having to wait days for service. However, want to know if this is "normal" for the MBPs. Coming from PCs I'd say it's not normal and the HDD is dying but I could be wrong considering a Mac is a totally different bird. What do you think?