Emergency Tranquility Reboot (http://www.eveonline.com/news.asp?a=single&nid=4292&tid=1)
16 December 2010, 8:16 pm
A database issue has been discovered that requires taking down Tranquility for a short period while the repairs are made, and we expect Tranquility's return to service at 20:50 UTC. The API and EVE Gate have also been shutdown at this time and will return to service with Tranquility.
UPDATE: Tranquility is back online. We apologize for any inconvenience this may have caused. Fly safe.
Source: eveonline.com | news from EVE (http://www.eveonline.com/)