Climbed the C/D route solo overnight, 9/9/07-9/10/07, car to car in one push. Crevasses were hairy, and the route was straight up ice in places. Getting up was definitely easier than getting down in places.
Spent the first night below Black Buttes. Awoke at 12AM and after crossing a few snow bridges, reached the summit via the Roman Wall at 7:15 AM. It was a little hairy coming down the Roman Wall. Saw some people belaying down it. That might be a good way to go. Perfect weather conditions all weekend, almost no wind and not a cloud in the sky for hundreds of miles.