Blue screen of the death on a Mac
Here it comes, first occurence: one of my VM's BSOD-ed on me yesterday.
To be completely fair, I did have experienced an occurrence of something similar twice in last moths: after wake up from sleep, the screen was collection of the color pixels, completely unreadable. After reboot, everything was normal.
I found out that the issue may be related to the "safesleep" mode. For now, I disabled the mode by