There are currently 55 questions in the close queue on DBA.se - Many are old, and it all seems a bit weird that old questions now have 4 out of 5 close votes. https://dba.stackexchange.com/review
Has a user been deleted, thus causing the number of close votes to revert back to 4 from 5 for these 55 questions?
I'll add that I've never seen more than a couple of things waiting in the review queue, as the regulars on DBA.se are pretty good at keeping on top of things.
EDIT: it's 30 days since I changed my display name. Is there a badly-written batch job that may have removed my previous close votes? Another user reports seeing the same number of votes, but nothing to actually review.