Mine crashes a lot. Usually after I send it to sleep when I go home. Next time when I wake it up, it starts up from crashed state. It might have something to do with some app I installed but I didn't spend time to figure that out yet.
I went through a few of these. At least once the GPU burned up when it failed to go to sleep after disconnecting from my thunderbolt display and putting in my laptop bag for 18h.
I think I went through two MBPr 15" machines before I got one that didn't have the problem. I still think it's possible some software I had was triggering it initially, but once it happened a few times, even a clean install with nothing on it could trigger it. Was very frustrating.
Interesting you got yours to work (VMWare 6) - mine's never worked since I upgraded to 6. $50 upgrade down the drain, no workable support, no one can reproduce it or track down an issue from my logs. :(
I've had this problem with Mavericks on a 2010 MBP. I "fixed" it by switching the hibernation mode sleep (hibernatemode 0), suspend-to-disk and suspend-to-ram would kernel panic every time.
I had the exact same problem on an iMac. I've noticed, that it happened, when I've left my Wacom Cintiq "on" overnight, while designating it as a second monitor.