hey folks,
sometimes it takes unusual long to load the game (may be due to traffic on the server). Then I usually quit and try to reload, that often helps to get into the game.
An other thing is a stalled game after loading. Try to check your fps then. (a description how to show fps can be found
here ). The game is not really stalled then, but awfully slow.
Especially since the quest started fps sometimes drops below 1 fps....
...sometimes it helps to reconnect, sometimes you have to wait like 10 minutes, before it is back to usual again.