My 15" rMBP is about 2 months old and has an LG screen. Just recently (possibly after my OSX 10.8.2 update about a week ago), the screen flickers briefly (like interference) for about 0.1 of a second but it recurs every 3-4 minutes. It seems to happen on about 1/3 of the screen, often the bottom 1/3 but sometimes at the top. Sometimes the whole screen. Searching this forum has found a few mentions of screen flicker but not quite like what I am getting. It happens both with the discrete and the integrated graphics card operating. I have done a reboot, and it still happens. It was first noticed while using Safari but I have since noticed it while using other apps (like Aperture). Has anyone else experienced this? Sounds to me like a long drive to the Genius bar.