At 15:30 (19:30 UTC) FogBugz On Demand started returning 500 errors. Our System Administrators have been restoring service to accounts. Affected accounts will have seen either 503 errors or timeouts/failures to load when attempting to browse FogBugz On Demand, and will have seen Kiln overheating or disabled errors for Kiln On Demand.
At this time, your account service should be restored. As always, if you have any questions or your site is still down, please contact us.