[ubuntu-uk] Ubuntu torrent tracker failed?

[alan c]

I cannot seem to get my ktorrent (2.1) to connect with the tracker. 
This applies to ubuntu and kubuntu - various versions - 6.06, 6.10, 
7.04beta (note I am seeding not downloading these).

I am get the torrent file from

http://www.mirrorservice.org/sites/releases.ubuntu.com/7.04/ubuntu-7.04-beta-desktop-i386.iso.torrent

It tries to connect to
torrent.ubuntu.com (port 6969)
and fails.

other torrents are no problem - sabayon, knopppix, theopencd, etc etc

If something is wrong at this end I cannot see what it is. The other 
thought is that somehow the ubuntu torrent machine is broken?
Has anyone got any other responses?
-- 
alan cocks
Kubuntu user#10391