Is there an Ubuntu One client for Kubuntu?
Solution 1:
12.04
From Precise, there is now an officially supported QT version of the Ubuntu-One client.
how to install
sudo apt-get install ubuntuone-control-panel-qt
Solution 2:
After the installation the QT Ubuntu One client, you have to make a startup item for Ubuntu One\ when your system starts adding the following command:
ubuntuone-control-panel-qt --with-icon
You can do this clicking at the kickstart icon (down left at your monitor), and type start for searching where the application is, to configure the startup apps of your system.