I have the Rev A 15" MacBook Pro with me, and I bought it back to May/2006. Last summer, Apple has a battery replacement program for battery that show poor performance with less than 300 charge cycle, and I had my replaced back on July/2007. Lately, I realized my battery drain really quick with less than 2hrs of battery compare to 3+hrs, I reset everything I can and calibrate the battery and it still not help at all. I quick called Apple and send my battery to their ASP in my area, and they decided to replace my battery once again. 2 replacements within 24 months, it really makes me think is it really the battery or if my MBP has a problem inside. Just wonder if anyone has a similar problem