SiteBuilder users won't be able to edit web pages between 10am and 12.30pm on Tuesday, 10 December 2013 due to maintenance work. People will still be able view your pages as normal during this time. However, they will not be able to submit forms, make resource bookings, post anything in discussion forums or leave comments.
This will allow IT Services to upgrade the SiteBuilder service to enhance its stability and performance. If this is likely to cause you any problems, please email the Web Team (webteam at warwick dot ac dot uk) and they'll do what they can to help.
EDIT: When moving Sitebuilder to new servers we encountered an unexpected problem which hadn't occurred during testing. This caused pages to be very slow to load or to return errors (503 and 502). After investigation and a large amount of work undertaken by multiple teams in IT Services, we made the decision to reverse our change in order to avoid further downtime.