My system crashed, killing ktorrent. When I started it again, it displayed a dialog with a list of files from a torrent that I had finished downloading already, and a few buttons. I don't remember the exact labels, but I clicked on the one that said something like "Do not download". An instant later all the files from that torrent were gone.

I think it would be a good idea if a confirmation dialog ("Are you sure you want to delete all these files ?") was shown to let the user confirm every operation that can delete (even partially) downloaded files.

Version is 2.0.2.

edit: sorry, I intended to post this in the development section.

We allready had a confirmation dialog in SVN but now I have an option to not delete the files, and this is also the default now.

That sounds like the way to go.