Well, on my PowerBook G4, there are 2 command-keys (I'm sure that's common). My right command key doesn't work what-so-ever. I tried using the keyboard viewer and it doesn't turn gray either. Funny thing, but when I press the LEFT one, both cmd keys turn gray.
Well i dont know if its a missing driver or a setting, (maybe even a malfunctioning keyboard?) but if anyone can help I would appreciate it. Thanks.
Sorry, my bad. Haven't read through it in awhile and thought it affected keyboard too, but looks like just trackpad and other issues described. You may just have a bad keyboard or something lodged under that key.