Thanks. Unfortunately, the same result as post #19 (shared-mime-info). Currently, reinstalling the 11.4 MS5 DVD. After the mandatory updates, I will restart the KDE 4.6 RC2 straightaway, with the installation-generated repos, and your procedures.
Added the factory repo and voila ! KDE 4.6 RC2 (aka 4.5.95) installed, along with a total of 1430 changes. Looks very good, and the upgrade brought along the (not-quite but almost) latest kernel.
Thanks again for the help, especially that last post ! *
(NOTE: This success has been almost as exciting as Crawley Town’s Cup streak !)*