I have a Mid 2010 13" Macbook Pro and the keyboard backlight has not only stopped working but it the settings have completely disappeared. Also, when I press F5 and F6 to adjust the backlight nothing comes up on the screen. Its almost like my Macbook doesn't think it has a backlit keyboard. This seemed to have happened soon after I updated to OS X Lion not too long ago via the Mac App Store. Please help. Here's a screen shot for you.