"Obviously, to make Klok work on your system, you have
to install Adobe AIR first. Fortunately, this can be done in a few
simple steps. Go to the Adobe AIR download page, grab the Linux
version of the installer and save it in your home directory. Run
the installer in the terminal using the ./AdobeAIRInstaller.bin
command. Download the latest version of Klok and use the Adobe AIR
Application Installer (under the Applications -> Accessories
menu on Ubuntu) to install it...
"Neither Klok nor Adobe AIR are open source, so if you prefer to
keep your machine free of proprietary software, they are not for
you. But the clever interface, just the right amount of features,
and sheer ease of use make pretty compelling arguments for giving
Klok and the whole Adobe AIR idea a try."