[Resolved 11:56 AM PDT, 12 March 2013] Today’s rolling restarts have been completed.
[Updated 7:00 AM PDT, 12 March 2013] We are currently undergoing rolling restarts for the main Second Life server channel.
[Posted 7:12 PM PDT, 11 March 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, March 12, 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