When I try and use software update, it will display "checking for new software" and go about 80% of the way in the bar, then freeze. The bar stops animating, I get a spinning wheel when I mouse over it, etc. I also cannot force quit software update when it does this, and not even "killing" the application does anything. It also hangs on shutdown, so if I want it to go away, I have to do a hard reboot. I decided to download the 10.5.7 combo updater, and use that. So I did. However, the combo updater hangs at "configuring installation" for over an hour. I can force quit that, however. I don't know much about mac troubleshooting, I have repaired my disk permissions plenty of times, and also ran verify disk, and it believes the disk is fine. Any tips for either problem would be great. Thanks.