AFAIK,rebooting is not required because of the KDE change (logging out would be enough). Kernel cha.nges make the reboot neccessary
-- WISHLIST: Kubuntu/KDE did not work without reboot after upgrade to Dapper https://launchpad.net/bugs/58816 -- kubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
