It'd be nice if you could update ktorrent if you're dealing with KDE
4. There's a problem with the version in ports downloading from
public or your own server, has to do with keys I think. It's been
fixed for a long time but not in the version we use. The only ports
torrent client I could make work on a public Rasberry Pi image is
transmission-qt, but I only gave transmission-gtk about 10 minutes
test. Spent hours studying rtorrent first, with transmission-qt I
just loaded my .torrent file and it started working.