I have a 20" iMac that when I start using it in the morning, I have to turn the brightness back to its highest level from the lowest level. It pretty much stays bright the whole day most of the time (sometimes if I leave the screen blanker function on and/or RSS screen saver it goes back down before the day is out and I have to turn it up again). But almost like clockwork, I have to readjust it again the next morning. Anyone know how I can set this to always stay at the highest or pre-set brightness without having to adjust it every day. This is very annoying. I've tried everything I know with no joy. I do have the iMac automatically shutting down off every night around 2am and automatically restarting in the morning around 6am. I don't think this has anything to do with it, but I'm open to ideas or suggestions.