Celena and synaptic, I think.
Also, I switched to Deluge (installed via mint-install) and deluge worked. Then I used the latest .deb file from deluge-torrent.org, and installed that. Then deluge wouldn't open any more, so I used synaptic to revert back to the old version.
Though I reverted back, deluge still won't open. neither will azureus
EDIT: I re-installed azureus this time using mintinstall, and now it works. Deluge still doesn't (even though I'm using mintInstall for that, too)