Well, I have had my 13" 2.4ghz Macbook Pro for about a week now, and after using it extensively, im thinking perhaps maybe i should return it and purchase the 2.66ghz version. One reason why, is that programs and applications seem to take a long time to open. When i click on a program on the (Firefox for example), it bounces on the dashboard for about 5 seconds then finally opens. On my desktop running Windows Xp and a 2.66ghz processor, everything just opens almost instantly (although it does have a 7200rpm hdd), and on the Macbook i clearly notice that it just isn't as fast as what im used to. Im thinking that upgrading to the 2.66Ghz Macbook Pro will give me speeds that im used to. Anyone Think I will notice a speed increase with the 2.66ghz model? Will it make opening and closing programs faster? Will it increase speeds in burning dvds, and music production software?