Has anyone had a problem with their PowerBook display being really, really DIM? I have a new 15" PowerBook, and I have adjusted the brightness with the F2 key and the System Preferences Display window, both to the max value. I have also turned off the Auto-adjust brightness feature. The display is still pretty dim after all this. Is there something I am missing, or do I need to make a trip to the Apple store? (I hope I don't have to, because I bought it in Singapore and live in Shanghai) All you Mac gurus out there, any ideas? Thanks..