I do apologise - when I downloaded the django source code I was at home where I don't use a proxy. At work I do use a proxy, but thought that my bash-enabled 'http_proxy' environment variable would do the trick.
Not so, subversion has it's own proxy mechanism in ~/.subversion/servers See http://subversion.tigris.org/faq.html#proxy for more information. Well, I *did* say I wasn't massively famliar with subversion! :) Thanks for the help guys cheers, Tone