first of all, thank you for your great software.
It's very easy to use it
I see a lot of spam in cyberduck's trac.
May be you need to create a account , for people who will create a ticket.
for example, login : cyberduck, mdp : cyberduck
(same solution as adium to limit spam (http://trac.adiumx.com/wiki/ReportingBugs))