Well, I'm on my second 2008 MBP so far. The first one had a stripped screw when I went to replace the drive. They couldn't fix it, so they gave me a new one. Go figure. So this one... Well, I replaced the 5400RPM drive with a Scorpio Black 7200 drive. Now I'm regretting it, or wondering what's wrong because I can hear it -- it's quite loud. Sounds like a fan blowing constantly unless I put my palm on the rest. As soon as I take the palm off, I get the vibration noise. I checked and it's correctly seated, so I'm wondering if other people experienced the same thing when they upgraded their drive. I'm also having a hell of a time clicking. I have resorted to just tap clicking because pressing down is hit or miss. Mostly miss. I will click, then click again, then click again, then give up and tap. Other than that, so far so good. The battery takes *way* too long to charge, but once calibrated, seems to give decent time.