I had some problems with the recent one, perhaps because I'm linked to a different router. In any case, the speed was at 300+ kbs for a little while, then suddenly dropped to 5 kbs and slowly crept upwards, and then after a minute or so, it stopped downloading.

But after a while I found a solution. Whenever it went to 0 kbs and stopped downloading, I quit the updater and restarted it. Then it continued from where I last was and added another 5% before it stopped. I kept going like that, and after 30 min it was fully patched.