Sounds like you've been hit by the edit filter: I've been trying out disabling page creation for users younger than 3 or 4 days. It's supposed to be giving you a warning explaining that, though.
Indeed. Now it works. There definitely was no warning or anything related.
This is a thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. The previous thread is at close to 500 comments.