freebsd stable - Nov 2008 - /etc/ttys oddity

I have the following line in /etc/ttys:
ttyv8   "/usr/local/bin/kdm -nodaemon"  xterm   on  insecure

Because of X misconfiguration it constantly crashed, so:
kdm-bin[1178]: Unable to fire up local display :0; disabling.

So I fix xorg.conf, then I change on => off in ttys,
then I do kill -1 1, and X gets started!

Seems illogical. Or maybe kdm-bin does something "smart" behind the
scenes.

-- 
Andriy Gapon