During the afternoon of 23rd February we will be carrying out a small amount of maintenance work to the network which will cause a brief period of downtime. This is not expected to be anything longer than 5 minutes in two brief periods of 1-2 minutes each, although we are scheduling up to 1 hour in case of any unforseen problems. The work will be carried out some time after 13:00 on 23/02/2004.