Hello there, I am on a MBA (late 2010) with Mac OS X 10.6.8. I did a couple updates (including a minor update for 10.6.8 and Safari IIRC) via Software Update and when I restart, it says an error occurred and the updates cannot be installed. After restarting, I noticed the app "Better Touch Tool" is not in the menu bar so I went to Applications to open it manually but nothing happened. It won't launch. Then I tried Software Update once again, and there is a Problem Report says "Software Update quit unexpectedly." I also noticed that Dashboard is not working. When I go to Dashboard, my Dock disappears and re-appears (re-launch itself). Some other apps (eg. App Store, iTunes, iCal, Safari, etc.) also "cannot be opened because of a problem". So I tried to Repair Disk Permissions in Disk Utility. The thing just does not move at all. It's like "Estimated time: 46 minutes" forever. I have tried shutting down and restarting but didn't help. Luckily Chrome works fine...(Safari doesn't launch) otherwise I can't even ask for help here! Does anyone have the same problem? Please HELP. Thanks a lot!