Most Kubuntu specific customisations, kubuntu_10_konq_scans_nsplugins_at_startup.diff might be interesting if it's not already in trunk
http://people.ubuntu.com/~jriddell/karmic-debian-kubuntu/kdebase-debian-kubuntu.debdiff + * Merge with Debian, reamaining changes: + - Keep our -kde4 replaces/conflicts + - Do not re-add optional, unsatisfiable kdesktop dependency for libkonq5 + - Add newline to the end of kwrite.lintian-overrides + - kubuntu_04_hide_kfind.diff, access though dolphin + - kubuntu_05_konsole_colour_scheme.diff, much easier on the eyes + - kubuntu_06_simple_aboutpage.diff, treat konqeror as a web browser + - kubuntu_09_trash_kcm_in_dolphin.diff, from trunk + - kubuntu_10_konq_scans_nsplugins_at_startup.diff, scan for new plugins + - kubuntu_11_svn954343_dolphin_prefix.diff, from trunk + - kubuntu_12_folderview_retry.diff, fixes folderview on live CD -- http://lists.alioth.debian.org/mailman/listinfo/pkg-kde-talk