Writing a config files in $HOME at start-up is wrong way of setting
defaults, If defaults needs to be set, they should be set by krdb
instead of the startkde.
Another side-effect of writing config file is that this breaks the
distribution/vendor configuration, who might want to configure this
value by shipping kdeglobals in either /etc/xdg or $XDG_CONFIG_DIRS.
BUG: 407754
CCBUG: 389598