Trinity mirrors?

Hello all, This week end I again tried some install (trying to build a "video editing machine" around KdenLive and LightWorks - faily impressed by the later) and could not install Trinity (404 on one of the main repositories). This made me think we need mirrors. While I can imagine not many could mirror everything, maybe some could mirror TDE at least for one distribution. What are the requirements (here I mean disk space)? Of course the next question is traffic but this I would have to look were I am hosted. Have a nice day, Thierry