Lucky you. I have 25Mbps access... but KiCAD and the extras file are slated to take 8+ and 11+ hours respectively. Yes, you read that right. HOURS.
The download rate for the past ~5 hours has been about 90-140KBps - so about 25 times slower than my advertised bandwidth. (I actually get about 30, but 25 is all the ISP guarantees.) Naturally, I'm wondering if there isn't maybe another alternative - like a torrent distribution, or at least a faster mirror? I know there are plenty of free services that would host the files - something like FileHosting.org (I have no association - they were just one of the first to pop up in a Google search).