Ask HN: Is something broken with HN scoring?

Normally I assume if something's dropped of front page it's because it got flagged or because HN's vote rigging algo got triggered, but I noticed this Ask HN of mine seems to have vanished:

http://news.ycombinator.com/item?id=2909069

It's not visible anywhere on the "Ask" page where it should logically fall. It's had too few votes for it to have been hit by any vote rigging mechanism and it seems unlikely a question about SaaS payments would get flagged.

So has something buggy got into HN's rating system or is there some other aspect of scoring that I'm missing ?