I'm redownloading every .torrent file and going back to uTorrent.
Older versions of Deluge seemed to work better.
Anyway, no more Deluge for me.
Thanks for the help.

It's Deluge 1.3.5.
I never rename any torrents. I only label them with the label feature on uTorrent (which doesn't change the torrent's data).
By the way, where can I find that folder?

Well... I was using uTorrent for a long long time and decided to give Deluge a second try (had used it a long time ago). I downloaded and installed it normally. When I used the "auto-add" feature to quickly list all my torrent files, it listed them all and deleted them. Plus, some torrent ...

It just happened to me aswell!
I'm going crazy. These files are nowhere. What the hell is happening to Deluge?
Now I can't even switch back do uTorrent!