I'm not sure why but I've noticed for about 4 weeks now that whenever I run my Software Update from the System Preferences menu, the System Preferences quits with the message, "The application System Preferences has unexpectedly quit". I've tried the Disk Repair utility, and used Norton software to fix any disk problems but nothing works. The last OSX update required that I go to the Apple website and manually update my software to 10.2.5. I used to just click the Software Update and everything was taken care of. This is an annoying problem, now I have to manually hunt down updates. Any suggestions?