IMac 24" and adjusting brightness.

Hello. I have this fancy (and great) iMac 24". Only annoying thing is that when I try to adjust brightness, it just does not "adjust" brightness. Difference between "none" and "full" brightness is close to nothing. I have so far zap Prams, deleted prefs, turn green and shouted that I am Hulk - any ideas?
I know that there is Shade and other small apps to do this. But Brightness-control should efeect as...well... a brightness control.
Sooooo...any ideas how to get a working brightness control by keyboard?

Yeah, I have. And system preference panel.
When I press F1 or F2 to adjust brightness I have this normal response in display (picture). I dont know whats the right word for it but I mean the white brightness slash hovering on my iMacs desktop. You know, when You press volume controls there is a picture of speaker and when you press brightness there is a picture of rising sun.
Anyways, I get that. BUT THERE IS NO VISIBLE CHANGE IN BRIGHTNESS BETWEEN HIGHEST AND LOWEST.
Same thing via System preferences. Brightness slider has the same lack of adjustment.
Sooo, any ideas? Where could be the problem?

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Joram Rozewicz wrote: ... APPLE, please include ...
(1) You are NOT writing to Apple here!
As explained in the Discussions Help & Terms of Use,
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to send comments or suggestions directly to Apple.
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will see your input for consideration in future products.
(3) To offer Feedback on other Apple products, use Product Feedback
for the product most closely related to your concerns:
http://www.apple.com/feedback/
Message was edited by: EZ Jim
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IMac 24" and adjusting brightness.

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