After filing MBS-2153 I see that there's another problem. http://musicbrainz.org/work/19d34346-7efe-3925-b337-8e52f7819384 has already been merged with http://musicbrainz.org/work/bec8c68e-f127-31aa-92c1-d616e8940f7d so it shouldn't have appeared in the search at all. Perhaps this is hard to do anything about without doing a direct database search, though?