I see other people who have the ability to change their avatars who I don't think they are staff so why can't I change mine?

When I try to set an avatar image it says something about out of space then it logs me out.

    it's work for me, maybe you uploaded so big size image?
    i use 100x100 pix

    Messing around with the avatar function also made me realize I can change other peoples avatars.

    Of course, I would never abuse such a thing...