Have you considered multicast as an option, and if so, what stopped you from deploying it? Client support or Network support?

Multicast is only usefull for live streams (which we are still working on rights issues for). I remember hearing a lot about Multicast at the NAB coference in 1997. The website is still there (http://www.ipmulticast.com/). For ISPs who peer with us in NZ, we'd certainly look at enabling it (subject to some solid testing being done of course). cheers, Richard