I recently purchased a refurb 2.2 Santa Rosa MBP. The light sensor is driving me nuts and I need to know if a) this is normal and b) what can I do about it. When I use the computer in a dark or fairly dim room the light sensor kicks in, brightens my keyboard and dims my screen. Fine and thank you. But what I've noticed is that when I'm looking at a program or webpage that is mostly bright and white the screen brightens and when I switch to a program or webpage with a dark background, say dark text on grey, the screen dims. This is totally counterintuitive to me and actually makes reading the screen more difficult. When the page is bright I want the screen to dim and when the screen is dark I want it to brighten. Not the other way around. When the dark pages dim it's actually hard to read and I have to turn up the backlight and when I switch to google or such I have to turn down the brightness. Any ideas?