I've just noticed that deluge is taking 100% of my CPU when i throttle the download speed.
After putting download speed back to -1 the problem disappears. Turning it back up to for example 60 returns the problem.

Using the latest deluge (0.5.6.2) on Ubuntu 7.10 AMD64

Seems my deluge also froze overnight while I was downloading. When I looked again in the morning the tray icon was missing, and the deluge process sleeping.
Had to kill it and restart, never seen it happen before.

Maybe you should try another router.

No solution, but I do have the same problem. And I've got a few torrents in my list.

The funny thing is that the change log says

Fix shutdown hang

instead of

Added shutdown hang

Also running Ubuntu 7.10 Gutsy here, AMD64 version.

Well, I tried it yesterday evening. It crashed once I started it, killed all my fast resume data but it started fast afterwards. But because I encountered another crash (trying to update tracker while the torrents were still being checked) I reverted back to 0.5.5 stable. I found out that the update...

It does take quite a bit for deluge 0.5.5 to load on my computer as well, usually 5+ minutes for the gui to show up. Once it is running everything is very responsive though, so I usually start it and keep it running for a few days. I do have quite a list of torrents, this might be the issue, as I re...