I received an upvote on an old post early this morning. I log back in this evening and see my rep down 30 points. Upon examining the reputation log I see, in triplicate, a "User removed" -10:
Another curious thing is that the actual vote count on the post in question did not change at all. It was +4 after getting the single upvote this morning and now it remains at +4.
Is there something I'm missing?