For users of
Mandriva Linux 2008.0 who do not wish to install a release candidate version,
KDE 3.5.9 can be found in the
main/backports repository. This media source can be easily added using
Easy URPMI. If you are unfamiliar with adding media sources for your
Mandriva Software Installer or
urpmi. I have written an
article on my LQ Blog which I hope will be helpful.
KDE 4.0.1 can be found in the
contrib/backports repository.
HTH,