Keyboard Illumination Gone after updating to mac os x lion.

Hi all.
Im using my mid 2009 macbook pro more than 3 years now. i havent had any problems with my keyboard backlight. About 3 days ago i bought Mac OS X Lion and installed it, and the backlight is gone. The F5 - F6 buttons does nothing. And also "automatic keyboard illumination" option from system preference is also gone. Im sure that there is no hardware fault. I installed labtic software and it does illuminate my keyboard. so i know that my hardware is not broken. I think the Mac os x installer read my hardware wrong. Does any one have this issue? Can any body help me to get back my keyboard illumination? Thank you. Sorry for my English.

Could not find any solution through Google. Unfortunately I have to use my Macbook Pro without its most beautiful feature, "KEYBOARD BACKLIGHTING". No disrespect to LABTIC. But I don't like using it. If any body have any idea how to solve my problem I would be gratefully if you shared with me. Thank you OGELTHORPE and dominic23 for your kind advices.

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