MBP Backlit Keyboard and Lion

Greetings, I'm having a problem with my brand new MBP and it's backlit keyboard. It won't ever go out. I can be in a bright sunlit room and it still won't go off. if I uncheck the box "automatically illuminate keyboard in low light" it still won't go off. it's ALWAYS on!!

Now, if the screen goes dim, based on the energy saver, then the keyboard will go out. If the timer adjustment, in the keyboard preferences pane, is set to something other than never, when the timer hits that limit, the backlight will go out. However, during normal operation, the ambient sensor seems to do nothing. Also, as I mentioned, it seems to work this way whether or not the check box is checked or not for automatic illumination. It works like it's always checked and like it's always in a dark room.

I first thought it was a hardware issue, but now realize it's a problem with Lion. I created a partition on an external drive and reloaded Snow Leopard on that partition. When I boot up into Snow Leopard I don't have any issues with the backlight working correctly.

Any thoughts from the Lion experts? Anyone else having similar issues?

Thanks, Scott