So if at 1000 charge cycles, the macbook pro is expected to retain 80% of its capacity... then the more cycles you put in, the quicker it lose its capacity. Correct? Or should you keep it plugged in most of the time to not put as many charge cycles in it? I know you're not supposed to keep it plugged in all the time. And did anyone notice the upgrade for macbook pro this week? It is now 2.4GHz instead of 2.3GHz. (I just got my macbook last Friday. Geesh) does the .1GHz really make a difference?