1. Open up FFXIV and note the patch file that's being downloaded. i.e., today's patch is D2010.11.25.0002.
2. Go to Documents > My Games > Final Fantasy XIV > downloads > ffxiv > 2d2a390f OR 48eca647 > metainfo
4. Open up the .torrent file with the same name as what's being downloaded in step #1, using your favorite torrent client
5. Once that's downloaded, copy and over-write everything you downloaded into Documents/My Games/Final Fantasy XIV/etc
6. Open up FFXIV again and the download meter will have jumped up to about 99%
7. Don't forget to leave your torrent to seed for a while so other people can get it quick too :)
Took me about 5 minutes to download the Nov 25 patch this way.
Hope this helps you guys.