Proxy support

If Mr. Langridge is responsible for working out "what Ubuntu One should do", a great question to ask him would have been how come there still isn't any proxy support. Proxies are used very widely across companies and universities and I really can't understand why this has not been implemented. There has been a bug report for this (https://bugs.launchpad.net/ubuntuone-client/+bug/387308) for over 2 years, with many people having marked it as being affected!