Step-by-step tutorial with screenshots
Step 1 - Add KDE 4.3 Repositories
Go to System -> Administration -> Software Sources...
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...enter your password, and the Software Sources window will appear. Click on the second tab, "Third-Party Software," then click the "Add" button and paste the following code in the new window that will appear...
deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu jaunty main
Then, click on the "Add Source" button...
