A new bugfix KDE release is available to update Kubuntu 9.04.
Add this repository and do a full upgrade:
deb http://ppa.launchpad.net/kubuntu-ppa/ppa/ubuntu jaunty main

Music playing application Amarok has rocked the world with their 2.1 release.
Packages are available for Kubuntu. Users of the Karmic development release can upgrade their Amarok packages. Users of our stable 9.04 release can install it from the Kubuntu Backports PPA.
deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu jaunty main
A second beta is out from KDE for the upcoming 4.3.
Users of the Karmic development release can upgrade to the latest packages.
Users of our stable 9.04 release can install it from the Kubuntu Backports PPA.
deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu jaunty main
The second alpha of our development version has been released for testing.
KOffice 2 has received its first update in KOffice 2.0.1. Packages are available for our development Karmic version by installing koffice-kde4. Users of the stable 9.04 can install it from our Kubuntu backports archive.