I finally got my rMBP (CTO 2,6/16GB). The display looks really nice, no IR (yet, it's a LG...). Now I've got this strange problem I never read here before. When in Safari, I get this vertical lines: They only appear when I'm using the integrated GPU. Also some weird stuff on the cornering: Anyone seen this before? Don't want to switch to the other GPU, since it takes a lot more power.