Ok, I found the problem, why the redirect from Ubuntu One back to Conboy is not working. In this file /usr/share/applications/uri-action-defaults.list the last line is: conboy=hildon-conboy.desktop This line is at the wrong position. It needs to be added to the first section of this file. IŽll fix it with the next update. If someone tried to edit the file manually, run "update-desktop-database" as root afterwards. This will crash the browser :/ But afterwards it should work. (At least a bit...)