In-game: When people seemingly don't try to work with the group when doing new/different mechanics than what they are used to. Three wipes on Nidhog the other day because someone can't understand that the prison-like purple-prince add is a bad thing that needs to be killed quickly.

Out of game: That people I work with can't figure out how to send a secure email, even though we've been using said secure email system for over 2 years now... WTF!?