bug in "first solved by" ?

A couple of hours I "first solved"

http://whatthemovie.com/beta/movies/view/5053 and
http://whatthemovie.com/beta/movies/view/5071 .
Now "first solvers" are Void and Muten. The screenshots are still marked as solved.
How did that happen ?

btw I was not, repeating not stone cold drunk last night.