As has been posted, the tech support forums are best for player to player assistance but for direct support you need to contact us via
http://support.turbine.com
As to this issue we need to gather quite alot of detailed info and that is best done via email.
I would note that in cases where the error details a proxy, you may want to check with your ISP, if you know your system's not directly using a proxy server, it's still possible that as it transits their network it may be passing through one and it may be encountering issues handling the functions.