I just received my new rMBP and like most, I have an LG....and like most, I also have some of that ghosting. It does take 15 mins of the checkerboard test on screen though to reproduce a light effect so I don't know how concerned I should be. I do think 15 mins is a bit sort of a time frame to be demonstrating ghosting but I'm thinking I'm going to keep it....as I don't expect it being a real problem long term (or at least hoping it won't). But if I DO decide to keep it, is there any chance they can refuse to replace my screen in the future claiming it's testing "within their specs"? What would you guys do? Is the whole Apple roulette really worth it? I love everything else about it and it's in perfect condition - I'm afraid I may get some banged up replacements as some of the others have, and the chance of landing a Sammy at this point seems slim to none unless anyone knows of any tips/tricks???