Hi everyone, I have an Intel iMac, and for some reason every once in a while after I boot my machine the screen's brightness is very low, much lower than what I usually keep it at. When this happens, I simply open the display preferences and increase the brightness to the appropriate level, but it is a little annoying. Most of the time my screen remembers it's brightness settings when I turn it on and off. Does anyone know why this is happening? Is there anyway to "fix" this?