I just want people to know that if they want their screen to stop dimming before it goes to sleep, you just need to uncheck the box called "Automatically reduce the brightness of the display before display sleep." Before that I was getting SOOOOOOO annoyed that my screen kept dimming every 10 seconds or so and I if I didn't figure out how to change it I was gonna end up doing something drastic! In older versions of OS X in the Energy Saver screen pref the screen dim time used to just be half the time of your screen-sleep time. But now the screen dim time is independent of how long you set your screen-sleep time. Just thought someone out there is probably feeling like I did and would like to know this information. Enjoy!