Honestly, it's not even the failing that annoys me with the door it's the fact that it's completely solid until it's 'open.' This despite the fact that the tail end of the animation has the door completely open but for a few stray side threads, but [i]THOU MUST WAIT[/i] for it to finish before you can move through. If it took the exact same amount of time to open, but was visibly and obviously closed until that point I'd be okay with it.