I have no idea why this fixed it, but I have Quake on my laptop, and I decided to see if shooting multiple rounds could still be done by holding down the key. It still worked, and after I quit my game, my keys repeated just fine. Weird.
Anyway, thanks for the help.
I've had my Powerbook G4, OSX for some time now, but tonight I realized the key repeat was no longer working (first time problem).
I tried to fix the problem under System Preferences>Keyboard & Mouse>Keyboard. I set the "key repeat rate" on fast and the "delay until repeat" on off, but it...