I also encountered this, the gconf entry should definitely be changed by default because any user attempting to use multiples torrents at once will get a cryptic error message (Couldn't listen - (98, 'Address already in use')) instead of things Just Working.
-- "Address already in use" error with multiple downloads https://launchpad.net/bugs/57039 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
