KDE system settings does not remove links within runlevel directories

I tried to manage the services running on my PC using the "System services" task within KDE systemsettings. Independent from whether I start this service as root or as user and switch to administrator mode, the result is the same:

Within the dialog, I'm able to switch of "start service at boot time", but the next time it starts the service is marked as "being started at boot time" again (and it is also started at boot time).

When starting from a shell, I got the following output (I did several tries):

Could not remove symlink /etc/rc2.d/S50hplip :: [Errno 2] No such file or directory: '/etc/rc2.dS19hplip'
Service hplip is still used in runlevel 3, not removing K-Links.
Service hplip is still used in runlevel 4, not removing K-Links.
Service hplip is still used in runlevel 5, not removing K-Links.
Could not remove symlink /etc/rc2.d/S50nvidia-kernel :: [Errno 2] No such file or directory: '/etc/rc2.dS20nvidia-kernel'
Service nvidia-kernel is still used in runlevel 3, not removing K-Links.
Service nvidia-kernel is still used in runlevel 4, not removing K-Links.
Service nvidia-kernel is still used in runlevel 5, not removing K-Links.
Could not remove symlink /etc/rc2.d/S50rsync :: [Errno 2] No such file or directory: '/etc/rc2.dS20rsync'
Service rsync is still used in runlevel 3, not removing K-Links.
Service rsync is still used in runlevel 4, not removing K-Links.
Service rsync is still used in runlevel 5, not removing K-Links.

The first part of the error message is irritating as "S50hplip" does not exist. Nevertheless the last part of the message (/etc/rc2.dS19hplip) looks like a "/" is missing in the path specifier for the link names (/etc/rc2.d/S19hplip exists).

Distribution is kubuntu dapper testing. Package information are:

Package: kde-systemsettings
Status: install ok installed
Priority: optional
Section: kde
Installed-Size: 548
Maintainer: Jonathan Riddell <email address hidden>
Architecture: i386
Version: 0.0svn20060314-0ubuntu4
Depends: kdelibs4c2a (>= 4:3.5.1), libacl1 (>= 2.2.11-1), libart-2.0-2 (>= 2.3.16), libattr1 (>= 2.4.4-1), libaudio2, libc6 (>= 2.3.4-1), libfontconfig1 (>= 2.3.0), libfreetype6 (>= 2.1.5-1), libgamin0, libgcc1 (>= 1:4.0.2), libice6, libidn11 (>= 0.5.18), libjpeg62, libpng12-0 (>= 1.2.8rel), libqt3-mt (>= 3:3.3.5), libsm6, libstdc++6 (>= 4.0.2-4), libx11-6, libxcursor1 (>> 1.1.2), libxext6, libxft2 (>> 2.1.1), libxi6, libxinerama1, libxrandr2, libxrender1, libxt6, zlib1g (>= 1:1.2.1), kcontrol
Conffiles:
 /etc/kde3/systemsettingsrc 2394629fb7eb461ee898e3c99a92e41c
 /etc/xdg/menus/system-settings.menu 0257681193bfc907d02009770dde8d84
 /etc/xdg/menus/kde-applications-merged/system-settings-merge.menu b0910f384045bcbe5cadee733e0776a2