I use both a 12 inch pb (1.5 ghz with 1.25 RAM) and a mac mini (1.42 with 1 g RAM) and use one at home, one at work. I'm very happy with both systems, except I'd like more speed when I work with MS powerpoint. I do lots of talks in my work and spend a great deal of time sorting and reorganizing powerpoint slides from various presentations. Even when I have only pp open (but with several presentations), slide refresh, etc. seems delayed. Is this cpu related? Any ideas how to improve the performance on either of my systems? Thanks so much.