The one thing that all the *buntus lack is a decent clipboard manager.
Fortunately, there are plenty of options for Linux; I personally use Parcellite.
It is a simple text only clipboard that stays in your System Tray for when you need it. The most important function it plays is to maintain text in the clipboard even after the application the text was copied from has been closed.
It is now in the Ubuntu Intrepid repository, but GetDeb helpfully compiled it for Hardy (version 0.8).
Just download the Hardy 32-bit file, and install with GDebi (double-click) or dpkg:
sudo dpkg -i parcellite (press Tab key to complete filename) sudo apt-get install -f
To get it autostarted at login, just copy the .desktop file from /usr/share/applications to ~/.config/autostart, (which can also be done quickly from Terminal):
sudo cp /usr/share/applications/parcellite.desktop ~/.config/autostart/parcellite.desktop