I am new to this forum, (new to post anyway) and I have searched through some of the posts but did not find exactly what I was looking for. I hope some of the members of this forum might be able to offer their advice. I am doing video editing using short video clips and stills from my canon digital camera. I am adding lots of narration, subtitles, transitions, and background music. I am using IMovie (great program) and my videos are getting to be 30 to 40 minutes long. I am finding that the response time is getting very slow, and using imovie very difficult, as my video project become more complex. It is getting so bad that editing my projects is almost impossible. I have tried to follow some suggestions in order to speed up my system, with little success. I would like to ask: Is my system powerful enough to do what I want? My system: Powerbook G4 aluminum (1.8Ghz powerPC) 2Gb of ram 80Gb hdd (standard) 100gb external Hdd. I know this is an older system, but on videos just a little shorter everything was running great. Have I just gotten better using IMovie, and thus started adding so many "enhancments" that I have asked too much of my Powerbook? Do I really need to pry $3000 loose from my wallet and get the full tower mac? Any advice would be greatly appreciated.