If you're having freezing problems, try downloading the file using Free Download Manager (that's the name of the program). There was a little bit of lag for me when it was getting started, but I had really fast speeds all the way through.
Unfortunately, I have no idea why the update servers aren't working. When I go to the website it seems as if they have everything in there that the other versions of YDL do, but nothing is downloading correctly.
I've checked all of the files in my etc/yum.repos.d folder and they all seem to be pointing in the right place. The only thing I can figure is they have some sort of switch in the index file that is turning off downloading until they do the wide release (which hopefully happens today or tomorrow so terrasoft can keep their promise of a Dec 25th week release).