hey,i got my new mbp just yesterday and my stupid friend messed with the fonts by accident...i had to reinstall the OS from the cds...while installing and after the installing is done(now)..i can see the screen shows something like waves from top to bottom of screen(flicking??)..how to solve that??? the problem was 100% not there before the installation. any solutions?! Edit:this problem can be noticed especially in the middle brightnesses.