Hello, just wondering if anyone has experienced this. 2013 rMBP, 8, 256 I tend to fully reboot it about once a week. Otherwise I simply close the lid in between uses. I have noticed recently that when opening the lid, for a split second the screen flickers some fuzzy black and white, almost like television interferance. Only for a half a second, then my log in screen appears as normal. Other than this minor issue I have noticed absolutely zero issues with this Macbook. And also this only seems to have come about since I updated to Mavericks. Has anyone else seen anything like this? Think its worth worrying about at all? thanks!