I own a 1.33GHz 12" PowerBook G4. It has 768MB of RAM (Apple installed) running Mac OS 10.4.2. Today my PowerBook began running very slow. Clicking menu's, opening apps and simple tasks like turning on/off bluetooth will prompt a spinning wheel of death. If left alone for a few mins the task will finish. The computer is just running really slow. I have tried using Disk Utility to repair permissions with no change. I restarted and shut down the computer and now it is taking forever to get into the OS. Right now it is stopped at a blue screen with the mouse arrow but I am sure I will get to my Desktop soon. What should I do? I had this problem about 3 weeks ago and I solved it by formatting and reinstalling Tiger (it was time anyway). Why is this problem happening again? I would like to avoid reinstalling Tiger again... Thanks!