Comment 12 for bug 106382

Actually, a sync WILL get you a working package. DebTorrent will currently work without the extra infrastructure that Par describes, it will just be less efficient at peer-to-peer sharing than if that extra information was available. Here's a link to the relevant question in the FAQ:

http://debtorrent.alioth.debian.org/FAQ.html#index3h4

I installed DebTorrent on my ubuntu gutsy machine and it works fine for downloading packages. I'm hoping to get it into Ubuntu now so that people can try it out and then eventually someone can be convinced to add the infrastructure needed to support the more efficient sharing.