On Friday 4 December we'll be upgrading the version of EPrints installed by the library on http://eprints.ru.ac.za/. As a result of this, you'll be unable to log into EPrints (for self-archiving, changes, etc) from 8AM on Friday until 8AM on Monday. For most of the upgrade, you will still be able to view the documents on http://eprints.ru.ac.za/, but they'll be read-only. There will, however, be about half an hour's outage during the course of the afternoon as we switch from the old version to the new version.