That's strange indeed. I just ran the election several times. From 12 runs in 7 runs Rockmarble is third placed and in the other 5 p-uae is third placed.
Count after eliminating Rockmarble http://competition.meetmeego.org/submissions/55 and transferring votes. Candidates p-uae http://competition.meetmeego.org/submissions/69 and Rockmarble http://competition.meetmeego.org/submissions/55 were tied when choosing candidates to eliminate. Candidate Rockmarble http://competition.meetmeego.org/submissions/55 was chosen by breaking| the tie randomly.