[Completed 11:19 AM PST, 5 March 2013] Today’s rolling restarts have been completed.
[Updated 6:57 AM PST, 5 March 2013] We are currently undergoing rolling restarts for the main Second Life server channel.
[Posted 8:09 PM PST, 4 March 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, March 5, beginning at approximately 5:00AM PST. Please refrain from rezzing no copy objects, making inworld L$ transactions and remember to save all builds.
Source: http://status.secondlifegrid.net