Upgrade Scheduled for WikiSpaces
WikiSpaces (wikispaces.psu.edu) is scheduled for a major upgrade at 5 a.m. on Sunday, November 18th. It should be returned to service prior to noon. Due to the nature of the upgrade, WikiSpaces will not be available until the upgrade is complete.
More information: Upgrade Scheduled for WikiSpaces
Story added 12. November 2012, content source with full text you can find at link above.