Hi, I've had a couple issues with my rMBP now, and I've been confident that all of them were software based. I'm here to ask about the thread topic, but I will touch on the other problem I've had, to see if there could be any possible connection. The issues I've had? 1) GPU failing with a couple third party applications when awaking the laptop, requiring restart. I believe VLC was one of the culprits. When you put your laptop to sleep in full screen mode, and returned, it would cause 'tearing' (for which a thread has already been circulating somewhere here for a bit) that could only be fixed by restarting the system. 2) The most recent and worrying? Whenever I move my laptop screen (change the orientation of the hinge) I hear clicking. It doesn't sound right at all. The hinge moves smoothly, but I hear this loud clicking as if you were flexing some PVC or something was about to snap. By recent... I mean I've had it for as long as I can remember. I have a BTO rMBP, 512GB SSD, 18GB RAM and the 2.7GHZ processor. Should I be worried? Or should I take the machine in.