I wanted to try out Kubuntu so I inserted a Kubuntu Dapper cd and booted from it, then installed it. The packages in the dapper repos are very old so I thought of migrating to Kubuntu Edgy. Just to be safe I followed this guide to upgrade from dapper to edgy.
First make sure you have ubuntu-standard and ubuntu-minimal packages installed
Then the kubuntu-desktop package
sudo apt-get install ubuntu-standard ubuntu-minimal
Then we need to change all the dapper repos to edgy repos, to do that issue this command
sudo apt-get install kubuntu-desktop
To start the updgrade issue this command
sudo sed -e 's/\dapper / edgy/g' -i /etc/apt/sources.list
sudo aptitude update && sudo aptitude dist-upgrade && sudo aptitude dist-upgrade && sudo apt-get update && usdo apt-get dist-upgrade && sudo apt-get -f installNow you just have to reboot your computer, if you get any problems after the installation see the link above for trouble shooting
sudo dpkg --configure -a
If you want more packages than the standard ones you can generate a good sources.list from source-o-matic

