So I got my rMBP back in August (2.6/16/512). Three weeks later, it started making a subtle popping noise in the top left-hand side of the keyboard. I visited the Genius Bar, asked them if there was anything wrong with the fan (there was not), and I went home. Then, I started having other issues. Like artifacts on youtube videos, freezing, and ultimately the keyboard backlight gave out. Well, long story short, I kept good notes and built a case with AppleCare and the Genius Bar, and they found through some diagnostics that there was something wrong with my computer, but they couldn't determine what exactly to blame.... So, to my surprise, and without any prior repairs, they simply offered to replace my machine . They ordered it on Thursday, and I was notified this morning that I was cleared for pickup. I picked up the new unit, and they were nice enough to let me keep my old magsafe charger in addition to the new one Couldn't be happier. Plus, the clock is reset on my battery & warranty. Yay, !