I use kdm and the only place I put it was in rc.conf, its probably safe to remove it from inittab if you manual added it before. try disabling both login managers, log in as root and issue one of these commands:
Code:
/etc/rc.d/gdm restart
/etc/rc.d/kdm restart
I believe this is correct, you might have to replace rc.d with init.d. If you are still having problems its probably the login manager itself.