I recently voted down a user that likes to make unfounded claims and has answered several questions with monologues about something else (as I've mentioned to him in the comments). Then I discovered I had 4 down-votes in a very short timespan on questions and answers that the community thought were good. Upon investigating I found that this user has 4 recently cast negative votes today, and it's the only negative votes hes ever cast.
Is there some mechanic in place for dealing with that type of behavior, or should I just move on in life? :)