A very strange issue here... I have a 1.5 month old rMBP. I use it mostly with just the built-in display set at 1920x1200, but I occasionally hook it up to an external display of the same resolution via HDMI. Often, when I have Safari open while plugging/unplugging the external display, it'll crash. No idea why. Can't even see the connection between changing display configuration and Safari, but it's clear that's the trigger-- as soon as the blue screen is gone, the "Safari has quit unexpectedly" message pops up. Any ideas as to why?