There is a problem with BITTORRENT. Try another torrent client.
AZUREUS works fine. I am downloading both at full speed right now (over 15 seeders for each).
Now I'm only downloading the first dvd (47,0%) at a very low speed (less than 1kB/s), previously it was going faster.
But I'm not downloading the second (34,3%) since yesterday.
I'm using utorrent 1.7.5...