Packages for the release of KDE SC 4.9.2 are available for Kubuntu 12.04.1 LTS releases. You can get them from the Kubuntu Backports PPA. They are also in our 12.10 development release.
Bugs in the packaging should be reported to kubuntu-ppa on Launchpad. Bugs in the software to KDE.
Read more at Kubuntu
