This has been fixed, sorry for the delay. It was one of the strikes tables (tracks failed logins). It wasn't noticed by our monitoring systems as all the actual pages loaded (and new content was appearing).
Please let us know if it persists, we will be checking this site throughout the day today to confirm it is working correctly.
Originally Posted by SJ
Once I sign out with new accounts I could never sign back in with them.
If anyone has been visiting the site these last few days and has been automatically logged in, I would suggest not logging off.