Hey all, I just purchased a MacBook Air (mid-2012) and installed Mountain Lion on it the day it arrived. Unfortunately, following the installation of what should be a solid operating system, I encountered a strange graphical issue in Safari. As you can see, on the edges of rounded design the browser seems to render things incorrectly. It only happens on three websites that I know of: The Verge, MacRumors, and Twitter. Sometimes there's even a line running through parts of the design. I'd like to assume this is an issue with the operating system itself, but I reinstalled it completely -- from scratch. It didn't happen when I first used the computer with Lion and Safari 6.0 installed, but it suddenly appeared now. The issue exists in no other browsers. I've tried Chrome, Firefox, and Opera and can find no problems at all, which leads me to believe that there isn't a problem with the hardware. I have two questions: (1. have you seen it before? (2. should I contact Apple or try yet another clean install of Mountain Lion? Thank you in advance for the help!