The Case of Powerline's Missing Archives

I follow Powerline, though it's often not good for my blood pressure, though Paul Mirengoff, now he's back, is sometimes good.  I was trying to figure out what they were saying 4 years ago, only to find a big hole in their blog archives: no posts for May - November 2008. Could just be a technical problem, or it could be they don't want people to know what they were saying?