Looks like this is still happening, but there was no answer ... any idea what parts of deluge are using UDP that are slowing down my internet so much?

Basically getting the same thing in fedora core. I guess this release is just totally busted? I wasn't able to download 0.8.7 and 0.8.6 had some pretty annoying bugs, too.

Sucks ... deluge has the best feature set on Linux but seems to be pretty buggy.

I've seen a similar problem - the traffic was all UDP traffic, and changing my firewall to disallow UDP traffic on the deluge port solved the problem while still allowing me to use deluge.

Hi, I've found that when running deluge my internet eventually becomes extremely slow, even (or especially) when I have no torrents downloads. When I look at the active sessions on my router I see a lot of incoming UDP connections on deluge's port number, even though I'm not downloading any torrent ...