The latest version of (k)Ubuntu comes with a Netbook OS to suit the small screen and moderate horsepower netbook segment of notebooks. The version is light weight and makes good use of the features common between netbooks to get the best out of your netbook.
The official websites recommend you download the iso and create a bootable flash drive using the iso. The step by step method to do it is given in the following links:
Ubuntu – Netbook Remix
Kubuntu – Netbook Technical Preview
If you are like me and dont want to go thru the process of installing Karmic Koala again, you are in luck… You can test the new Netbook Remix directly from the default desktop install of Ubuntu/Kubuntu.
If you are using Ubuntu you just have to install the “ubuntu-netbook-remix” package. That can be done with the following command:
sudo apt-get install ubuntu-netbook-remix
If you are using Kubuntu you just have to install the “kubuntu-netbook” package. That can be done with the following command:
sudo apt-get install kubuntu-netbook
When you reboot and login you will automatically be taken to the netbook remix of your OS.
PS: The version is one of the earliest releases, so expect updates and more improved performance in the near future.