I am just wondering because I received a couple of upvotes and marked a question as answered on Cross Validated and my rep didn't go up. I have no idea why it might have been frozen so I was just wondering. [the upvotes were on Cross Validated today]
The post you linked to is a Community Wiki post and upvotes (or downvotes) don't count on them.
The moderator converted it to CW. Only moderators can convert Questions to CW, while users can convert answers to CW by themselves by ticking the checkbox at the bottom-right of the answer field: