Panther is up and running well on my aluminum 15" PowerBook, except that my F8, F9 and F10 keys - the ones that control keyboard lighting - don't work now. That is, when I press Fn + F9, 10 or 11 they work as expected with Exposé, but pressing F8/9/10 by themselves brings up the transparent kbd lighting image on the screen with a white O-with-a-slash-through-it beneath, telling me it's not working. And it doesn't. No more keyboard lighting. I've tried resetting Exposé to different keys and tried turning it off - no activation keys or corners. Is anyone else's keyboard lighting broken? Or is this my own personal Panther gremlin? Please reply to lenn-at-mac-you know what I mean. Thanks for any insights you all have. MIDNIGHT UPDATE - D'oh! - I just took the PB into a dark room to see if the lighting would do anything, and it works just fine. It turns out that the lighting level keys only operate when the PB is in a low-light situation. Please delete this thread. Thanks.