If you want o do Sakai Development at Lancaster University whilst visiting, make the following changes. Make sure to remove them or comment them out when you leave.
~/.subversion/servers
[global]
http-proxy-host = wwwcache.lancs.ac.uk
http-proxy-port = 80
~/build.properties
maven.proxy.host=wwwcache.lancs.ac.uk
maven.proxy.port=80