All servers will be down for maintenance on Monday, January 31, 2011 at 10:30pm PST / Tuesday, February 1, 2011 at 0:30am CST / 1:30am EST / 6:30am UTC/GMT. Estimated downtime is approximately 30 minutes.
With this maintenance:
The Olympiad system will be deactivated (http://boards.lineage2.com/showthread.php?t=213206) until further notice.
Other timezones listed here (http://www.timeanddate.com/worldclock/fixedtime.html?month=1&day=31&year=2011&hour=22&min=30&sec=0&p1=234).