As per title... Loud grinding sound, goes away on restart, seems to be happening more consistently in the past few days (noticed it last week for first time). The MBP is 3 years old I have an appointment at apple store for tomorrow, im pretty sure they'll just say that the right fan needs to be replaced (applecare warranty ended a month ago of course) Wondering what kind of costs i can expect, if not excessive i might just pay apple store premium to get it fixed and over with, but im also toying with the idea to buying a replacement fan and replacing it myself. I have done a hard drive swap before and didnt find it too difficult, i would assume the fan thing wouldnt be that much harder, i saw fans online for about $40... I also saw some fan cleaning tutorials... should i attempt this before dishing out any cash?! any words of wisdom on this, or anyone had this done and know how much applestore charges to get this done? Thanks!