I hawe something similiar, been downloading the game at 700-800 kb/s speed but then i got 1 file remining to download it suddenly droped to 0 kb/s , i waited for 30 minutes but nothing happened, then tried to repair guild wars 2 directory, but the same problem occurred, finally reinstaled the whole game but noting seems to help. Now I’m restarting the client for past 30 minutes, but still got 1 file remaining at 0 kb/s speed