I don't know if this is affecting anyone else but I keep getting an error message telling me that the site is undergoing maintenance but when I click again, I get through to the site no problem.
According to ning status blog there was scheduled maintenance on Friday night but I experienced no problems until today. Still it's been reported so hopefully the bug will be fixed.
This from ning at 7.30pm Thank you for reporting this - there was an issue with one component of the system that caused sporadic error messages this morning. Apologies we did not catch it in time to post a status update before resolving it.
Let us know if you continue to see errors!