1. Is there any damage in startkde of running
kdetcompmgr as a background
task?
Yes
2. What process started in startkde is launching
kconf_update?
Don't know
3. Why is kconf_update being launched?
To regenerate a configuration file index IIRC
4. Is there a way to prevent kconf_update from
running?
Not a good idea
Sorry!
Looks like kded might be causing this. There is a setting in KControl KDE
Performance to disable system configuration startup checks. Possibly that
can be enabled to stop kconf_update.
Darrell