It must have been a temporary problem with the FM download server. The first download failed. I tried again and the file downloaded in about 90 seconds. So ... never mind...
Looks like you just caught it at a bad time. I am on a 30mbps down connection and it just started downloading pretty quick, < 2 seconds.
With thousands of users, I could see their server getting tied up hosting out .5gb files all day long. Don't forget that developers across the world are probably hitting that server, and not just for 14 updates, but for the archive as well.