See this as a review of kubuntu 6.06 from my personal perspective. I am used to Linux for several years and have been a user of Mandrake until Suse 9.3 and use currently Suse 10.1. I have once in my life, several years ago, installed a debian system but gave up very quickly since nothing worked out of the box.
From Kubuntu I would expect a System which works out of the box, includes all important KDE and 3rd Party...