I know what you mean. I've got 10.3.9 and it just turned of Airport. I have to use a UTP-cable to access the internet, which I don't have here yet, so for internet stuff it's back to XP
I've rebooted six times in the last couple of minutes.......
and then a thought struck me...... Repair Permissions........ running.
Now We Wait
Edit: btw, I'm also runinng Onyx, that'll take a while.
Running both Onyx and MacJanitord the trick. Sweet.