We hit the database limit again, which seems to be mostly due to the edit logs. (Edit things all day every day, etc). I'm... going to wait the stated week and see if things actually shut off. If it does, I might just suck it up and upgrade.
Database writes were broken for most of the day. Not sure why it would affect logging in, but it would definitely have broken posting. Poked at the database when I got home, it should be fixed now.