How to Use * Save the key file to your local disk * Launch Adept Manager from K-Menu->System * Choose from the menu Adept->Manage Repositories * Click the Authentication tab * Click Import Key File... and select the file you saved above * Click the Third Party Software tab * Add one of the deb lines above * Close and click Reload * From the Adept toolbar click Full Upgrade then Apply Changes * Log out of KDE and back in again once the new version is installedThe above assumes you have software-properties-kde installed (it will be removed if you install Feisty's KDE 4 packages). If you do not have it installed, you will need to add the authentication key on the command line with sudo apt-key add [file].