I'm very sorry to hear that you're having to go through another replacement. My screen is perfect and staying perfect, but as I mentioned, my computer makes weird buzzing, electronic sounds. So, I am awaiting my 5th replacement.
Hopefully for me the 5th time is the charm, and hopefully for you the 4th time is the charm. LOL WOW Apple just WOW
Apple did tell me that they were willing to discuss some compensation for my trouble. I'm thinking of asking for free 3 year Apple Care. What do you guys think?
Have you tried troubleshooting with Apple as to what could be the cause of these sounds? This is dreadful, that you are taking your chances at yet another replacement. Same goes for Quu and others here.
I have to say that in my experience it takes a long time for me to receive a replacement, even though Apple allows me to keep my current MacBook until the new one has arrived. My second replacement is due this Friday, the 22nd. Though, some of you have already went through more replacements in the same time span.
Just to provide possibly interested people with an update on my current machine: it still is as solid as a rock, much more so than my previous machine. The difference in build quality is night and day; which - in my opinion - is a bad, bad thing to maintain such a low standard in (broad) manufacturing tolerances for a $2000+ laptop. The screen, however, is noticeably yellow from center to bottom - I would almost dare argue that it is not so much worse than my previous machine, but that the location of it is more within viewing range thus more noticeable.
If I could get a rMBP with this identical build quality with a nice and uniform screen, that would do it for me. Unfortunately, this seems to be more of the exception than the rule.
Buying another MacBook isn't really an option for me either, I would feel really silly about settling for another laptop while this is the model I have saved up for and want.