Digikam (and showfoto) 1.0.0 beta6 and kipi-plugins 0.8.0 .deb packages for Kubuntu Jaunty 9.04 are available on my backports PPA. To install them:
Copy the lines below and add them to your system’s software sources. (Read about installing) deb http://ppa.launchpad.net/daniele.domenichelli/backports/ubuntu jaunty main deb-src http://ppa.launchpad.net/daniele.domenichelli/backports/ubuntu jaunty main
Import public key for my PPA: sudo apt-key […]