So, I purchased a high end (2.2) Macbook Pro 15 in early September, 2011. Since then, I've had 5 unit replacements and 2 screen repairs in the course of 4 months. The problems I've encountered include
Loose hinges
Loose USB ports
Broken hinges
A cluster of bright pixels
Bad sectors on the internal HD
Uneven colours on the display
More clusters of broken pixels
All these problems appeared right out of the box on different machines. Apple customer support as been good about replacing my machines, but this is getting ridiculous. I'm currently typing this on a new replacement that arrived with a broken pixel, uneven colour balance and built with a refurbished keyboard backlight (The keyboard backlight on other new 2011 machines looks very different, a lot better IMO). I plan to complain about this machine as well.
The warranty service has been accommodating, but my experience with the manufacturing of these machines has been awful. EVERY UNIT has problems. What's going on? Can anyone lend any insight? And no, I don't think that I'm being too picky. What is going on with Apple these days???
I went through just as many of the original iPhone before I got one that "just worked" but conversely have had no problems with my other 2 generations of phones, 2 MBPs or iPods. It sucks, but it is just a string of bad luck.