Suchmoon- Thanks! And I see what you mean about the graph not reflecting reality so well.  I'll add that to the short list to get ironed out.

JHammer - Great, I'm glad to hear things are a bit more stable.  Like I said, I haven't corrected 100% of the known issues, but it looks like we're defending against many of them now.  As for submitting stales, yes you certainly can (and probably should).  Due to the way we multiplex work, a stale could technically contain a solution.