I am currently running into a slight problem with my MBP (Early 2008). A few months back I replaced the stock HD with a 7200RPM drive. Install and cloning went fine. I didn't run into problem until recently. I have noticed that when I boot the MBP, I seem to loss exactly 1% of battery power, even when the system in plugged in. It wouldn't bother me so much except after 4+ days of during it on and off (daily use) my battery will start charging at ~96%. I did calibrate the battery a few weeks after installing the new drive, so I don't think that will "fix" the problem. Has anyone run into this problem before, with or without a 7200RPM drive installed? If so, were you able to fix it? If so, how? Thought I would ask here before going to the Apple Store because I know some (if not most) users here have upgraded to 7200 RPM drives in their MB(P)s. Thanks ahead of time for any help you can give me.