what is "kdontchangetheh" ?

Hi,

The full name is "kdontchangethehostname".

http://www.planetpenguin.de/manpage-1-kdontchangethehostname.1.html

(You can also try running "man kdontchangethehostname", the man page
was missing on my installation.)

So as the page says running the command is meant to make KDE aware of
the network hostname being changed (the one you see in /etc/hostname,
also try man hostname).

KDED (KDE Daemon, keeping track of system changes etc.) by default
runs kdontchangethehostname every 5 seconds. The details are to be
found in the kdelibs source code.