One thing that irks me is redundant controls. For example, there was a game I used to play that had a "disable IP check" option, but if you enabled it without Game Operator permission then you would be permanently banned. I have no idea why they couldn't just give the GO that option instead of giving people a "ban me now" button...
Anyway, back to SO. Since a user cannot vote on their own questions or answers, what is the point of the arrows being there? It seems wasteful to have buttons that I cannot use (and it's annoying when I accidentally click them when trying to expand my vote score, but that's probably just me), and I think they should be removed.