3962b1b created the issue

I loaded Cyberduck and it seemed to work but now Mail and Safari don't work. I get error messages that they can't connect to the internet, yet I've checked all connections and there's nothing wrong with the settings, modem or router. I tried to remove Cyberduck from my system (Macbook Pro, Leopard) but there are hidden pieces that aren't showing and won't allow me to remove the widget from the dock. (Trying to drag it from the dock only makes copies). I have deleted all of the Cyberduck elements I could find but this one won't delete and the Mail and Safari problems won't resolve. I suspect there are pieces of Cyberduck corrupting Mail and Safari that I can't find.