Esbern is ridiculously bugged. No voice, doesn't open the door, looping behaviour patterns (constantly places the same book on the table in Riverwood) http://www.youtube.com/watch?v=D1RNHZCXVsE Also, Odahviing. What I've seen on the Xbox 360 version he lands without having to use dragonrend. On PC he just flies far away. After dragonrending him he lands but he cannot be trapped nor defeated. This makes the quest incompleteable. Please fix these. I really wish to complete the game.