Comment # 10 on bug 967938 from Mircea Kitsune

Marking this as Resolved; It appears the problem was not a bug in the Kernel or
video driver. It had to do with my overclock settings! The memories were
clocked slightly too high, which introduced a small probability that the system
would crash precisely while watching 1080p / 60FPS videos. I lowered the RAM
clocks in BIOS, and there has been no crash after 10 days of uptime now. It's
beyond me why a frequency setting would crash a machine only while watching
Youtube, even after I had +4 days of uptime without problems... in any case,
this wasn't what I thought it was.