As of late (past week or so) my Powerbook has been acting more and more like a Windows machine. I am noticing terrible lags for mundane tasks (often a 2+ second delay when highlighting a bookmark in Safari) and startup times for "pro" applications (FCP, Photshop, Dreamweaver) are ridiculous. It's a 1.5 Ghz with 1 gig of RAM running 10.3.7. I've verified preferences, repaired permissions (numerous times), deleted cache files, log files, checked S.M.A.R.T. status, and run Onyx. Nothing seems to be helping. The fan is running almost 24/7 now and I'm starting to get worried. I'm planning on defragging, but are there any other suggestions/remedies?