I think I found a bug in 2.0.1. If you power on your Droid in the dark, the keypad backlight does not work. You have to go to Setting -> Display and manually unclick the "Auto" and reclick it back. Anyway to get it to work is to power the droid is a lighted room and everything will work fine. I think somehow the light sensor got screw up when it is dark to start with.