I've noticed something like a flicker lately and I'm not quiet sure what it is. It's not the backlight because the flicker doesn't appear to occur throughout the screen and I can't reproduce it by changing the brightness. It happens so fast that it's a bit difficult to tell what is actually happening and it seems to be random. I spend more time in Safari than in any other application, but I've only noticed this flicker in Safari. Basically, in the top left corner, I will all of sudden see something like a flicker and a white box appear then disappear. It happens very fast so I can't fully tell what is happening. As far as I've noticed, it's not the whole screen, and it's only in the top left corner that I've noticed it. I think a white box may appear then disappear, giving me the impression that there is some flickering going on. I'm thinking maybe it's Safari closing down a pop up box? Anyone else notice this?