Comment 2 for bug 1027651

I have problems with this feature as well.

After searching a bit online, I am pretty sure that this is actually the problem upstream,
and that it is already fixed:

https://bugs.kde.org/show_bug.cgi?id=303269

In short it is about ktorrent taking just the first of the trackers in the magnet link,
and it tends to be a slow tracker that times out, so you have to wait a lot.
With a little tampering you can go around this - use "open url", than paste the
magnet link, and delete some of the trackers in the url (they start with &tr=).
You add the same link several times with different trackers deleted (leave
just one) until it works. At the bottom of the screen you can find a "Magnet"
button that gives you the list of magnet links being processed.