UP: Got my deposit back from my evil flatmate.
IA: Evil flatmate can't do math worth crap, so she tried to stiff me on the deposit. I think I've managed to convince her that she's an idiot, but of course, now she's mad at me for it. (And I'm sorry she can't do math, but I'm also not going to take a loss on my deposit because of it.)
Oh, and I'm being charged rent for April 1-3. Which would be fine if she hadn't sprung an extra roommate on me a month ago with no notice/reduction in rent/etc. Since she did, though, I find it annoying.