Though people fuck up, I also don't believe these are "malfunctions". I have never trusted Diebold, and maybe I'm a liberal, but my first thought is that some Democrat in Virginia rigged the machines.
I prefer the paper trail. Papers can be destroyed, but at least they existed at some point.
(No, obviously, it would be dumb to have the votes switch to the Democrat candidate right in front of the voter, but let's be honest, this state produced a man who thinks wearing a shirt over his head is a disguise. I'm not about to discount the possibility some operative fucked up while attempting to tamper with votes).