I ended up having to fill out a paper registration before they would unblock me. After the dust settles, I am going to check on the status and find out WTH happened.
I wouldn't be surprised if a Dem activist used your name to request an absentee ballot. They may or may not have already voted for McA for you, but they succeeded in getting you flagged when voting in person. I've been expecting the Dems to begin using this tactic to block Republican or known Conservative voters.
The Dems have every registered voter's name address and phone number. Enough information to really screw things up for legitimate voters, if they want (and, of course, they want).
Both McDonnell and Cuccinelli have been state AG so I’m sure they are aware of the problem.
Reports on NOVA turnout are contradictory.
I wouldn’t be surprised if a Dem activist used your name to request an absentee ballot.