My summer 2008 black macbook (2.4ghz, 2gb RAM, 250GB HD) has been running strong ever since i got it. No complaints. I also upgraded my ram a year ago to 4GB and it has been running strong ever since. A week ago however I started experiencing constant freezes, spinny bars every minute, and overall slow performance. I also noticed a horrific clicking noise as well. Which is pretty subtle and sounds exactly like a hard drive malfunction (ive heard the same sound from externals) so figuring it is hard drive failure i bought a new 320 WD 2.5 5200 hard drive and installed it, and proceeded to install the backup OSX 10.5 disks. Everything went according to plan, however even after HD replacement the clicking sound is still there, just as prevalent as before. I do have 3 year apple car, however i have low expectations and am not really counting on anything, and since their phone support is currently off from normal business hours I am left guessing. If anyone had any insight it would be greatly appreciated.