Just got a brand new macbook pro. Loving it so far. I did notice however that it seems like the automatic backlight may not be working properly. When I first got it and turned it on the keyboard lit up. I did not need it lit as I was in a lit room so I turned it down. Later that night I took it to my bed in pitch black and the keyboard did not light up on its own. When I put my hand over the light sensor it does not light up. When you change the brightness manually once does it somehow mess up the automatic function? Any help is appreciated.