Add the following repository in your apt's sources.list
deb http://ppa.launchpad.net/chromium-daily/ppa/ubuntu jaunty main
Add the key for it
$ sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 4E5E17B5
Perform the following
$ sudo aptitude update
$ sudo aptitude install chromium-browser
Chromium browser should be installed and ready to be used. If you already installed flashplugin you can add the plugin to chromium-browser. I noticed the browser takes a lot of resource after adding flashplugin, so I no longer user. To set flashplugin perform the following.
$ cd /usr/lib/chromium-browser/plugins
$ sudo ln -s /usr/lib/flashplugin-installer/libflashplayer.so
