I have a macbook pro whose keyboard does not illuminate regularly. Usually when you place your hands over the speakers, the keyboard should illuminate. If I turn out the light totally, the keyboard won't illuminate. But if I reboot in the dark, then after a reboot, the keyboard will illuminate. If I turn on the light, the keyboard light will turn off apporpriately. Then when I dim the lights again, the keyboard light does not turn on again. How can I fix this problem? I have 10.4.9 installed (but originally 10.4.6) Please help, b/c otherwise I'm going to return the macbook pro. It seems like not a hardware issue.