puzzle success rate not working.

[2manynames]

Has anyone else had the problem that they solve all puzzles but somehow it appears as though I haven't. I have completed all puzzles presented this month. Up till today 30 min ago, my success rate was 100%. Today all of a sudden it says I haven't solved a puzzle, but it is not in my recent puzzle list. So how can I not have solved it?
The site has been a bit glitchy today and required a reload. Is this just a crappy bug that ruins your record.