A fix has been made for this bug from Jonathan Riddell . You can find the bug report at this link : http://bugs.kde.org/show_bug.cgi?id=61850
The cause seems to be : " ------- Additional Comment #52 From Stan Bobar 2005-10-01 18:57 ------- I have had this problem for quite awhile also. After reading through the list above and following some of the leads you guys provided I think I have found the source of this problem. If I run kcontoledit as suggested above then everyting works fine, I can log in and out to KDM and still go to Administrator mode no problem. However everytime I reboot the system Administrator mode fails. So after tracing what file get changed by doing the save with kcontroledit I noticed that there are two copies of ksycoca. One in /var/tmp/kdecache-(username) and another in /tmp/kde-(username). On my system I have a bootscript that cleans out /tmp/ on every boot removing the later file. So I restarted the system copied the file from /var/tmp/kdecache-(username) to /tmp/kde-(username) and tried to log in to Administrator mode and viola it works. For my solution I simply altered my boot script not to clean out /tmp/. Looks like if kcontrol can't find the file ksycoca in /tmp/kde-(username) it just bails out. " Link to the patch : http://bugs.kde.org/attachment.cgi?id=13231&action=view I hope that finally this boring bug is solved. Bye Marcello
