Not sure what it is this time, but my computer's been freezing at more-or-less random. So I probably won't be as active as usual until the problem's taken care of (which may involve switching computers entirely as it might be impending motherboard failure).
On the plus side, everything important was backed up, like the last time something decided to crap out on me.
EDIT: Switching out the video card seems to have worked. Hopefully. I was able to close Chrome twice without my computer freezing/crashing.
If the issue was indeed my previous video card, then I should be able to start drawing/writing on this computer again without fear of losing my work. Getting used to this new resolution is going to be very annoying, though.