Yep, as the title says.
I am running Win 8.1 64x.
Watch the video. This is reproducable 100%. If hardware accel. is enabled in firefox and I launch it right after boot with a youtube video playing in a tab, the system will lock up. If I disable HW accel. the issue is gone.
I have no way of tracking this issue because there is no BSOD or anything. How can I provide more information on this so it can be fixed?