I searched, but haven't seen this one. Everythign was fine last night when I shut down, but this morning, nothing will work - if it's an application that comes from OS x. Mail, safari, calculator, address book, etc. i try to launch the app, the little icon bounces twice and the black triangle appears. However, no window, it's like the application never finishes opening. The program is on though, becasue I have to "force quit" it when I tried to restart. I safe booted and no change. I tried to run disc utility to repair permissions, but I guess it's a system app too, for it will not open. I tried to reinstall the last system update, but the installer program will not launch either. Any ideas? I installed 10.3.8 at the beginning of the month when it came out and have had no problems until this morning. This one is frustrating.