Scheduled downtime.
2017.02.03
ambrosia.melon.org is being physically moved within the datacentre where it’s hosted (probably between floors). While it is being moved, it will be powered down and disconnected from the internet. The maintenance window for this move has been scheduled for 1900-2100 EDT on Sun. Feb. 5. Actual outage time is expected to be around 20-30min. An update will follow when the move has been completed.
UPDATE: This move has been postponed indefinitely. Details here.