>    login: Oct  8 00:00:36 init: getty repeating too quickly on port `/dev/console', sleeping

Ok. Web known everything, well, almost everything.

I've fixed this by 
changing
    console "/usr/libexec/getty Pc"         wsvt25  on secure
to
    console "/usr/libexec/getty Pc"         wsvt25  off secure

Can anybody extend section 8.10 of NetBSD guide?
http://netbsd.org/docs/guide/en/chap-x.html#chap-x-xdm

-- 
Best regards, Aleksey Cheusov.