Hi, just curious if this thing also happened to you when playing videos on youtube. I just noticed it this morning that when playing videos on youtube, the video is flickering (not the entire screen but only the video window). I'm a bit worried because this is not happening before. My MBP 2.4GHz is only 3 weeks old and I'm very sure the video was not flickering when I tried playing youtube videos when I first got it. Do you think this is a Safari or a hardware problem? Thanks in advance!