http://musicbrainz.org/release/a55c5a2a-999f-4a60-bf4b-c721994c9c1d was added from a 12 track discID lookup from Picard - but apparently, parsing a 13 track tracklist (from http://www.amazon.co.uk/gp/product/B007RL8MNW) allowed the editor to enter it incorrectly as a 13 track release (which is hard to fix later, of course, since the UI isn't designed for discID/release mismatches). Needless to say, that shouldn't be happening.