Late 2013 MBP, 15", quad core i7, 16GB RAM, running 10.9.3 (although I've seen the problem happen in previous 10.9.x versions).
Sometimes (quite rarely) upon opening the lid, I get a dialog telling me my computer restarted because of a problem. "Report" button produces this output:
https://dl.dropboxusercontent.com/u/2213114/Crash.txt
Sometimes (quite rarely) upon opening the lid, I get a dialog telling me my computer restarted because of a problem. "Report" button produces this output:
https://dl.dropboxusercontent.com/u/2213114/Crash.txt