Refworks have notified all users that there will be a system "downtime" for approximately 8 hours on Sunday 16 February 2014, between 03:00 and 11:00. This is due to the usual "essential maintenance".
Refworks also added in their communcation...
"During this time period RefWorks users can expect sporadic availability, including short periods of complete downtime. We anticipate that access issues and possible functionality problems will last anywhere from 3 to 15 minutes. If you experience issues with RefWorks during this maintenance window we recommend that you close your browser session, and return to RefWorks at a later time."
We're sorry if this inconveniences anyone.
For anyone with questions on this, please forward them to firstname.lastname@example.org.