After some problems with Leopard, including a wireless issue I posted before, as well other factors, I decided to downgrade back to Tiger. I figured I don't really use any of Leopard's features, at all, and that Tiger is more stable and a little faster. I did an archive and install. The problem is that for some reason, it's incredibly obvious how much slower my computer now is. Maybe it's using Leopard and Tiger's system files, or maybe it needs to be cleaned up, but either way, my newly installed OS is slow. What should I do to increase the speed of my mac?