I have the newest Macbook Pro with a 15 inch screen. It has 2.2 GHz Intel Duo Core processor, and 2GB of memory. The specs on the website say that the battery should provide power for up to 6 hours, however even with the energy saver set to "better battery life" the most I can get is 4 hours and alot of the time it is only 3 hours. The computer is brand new so I must be doing something wrong. Any helpful tips would be nice, to get my batter lasting as long as possible. Thank you.