I'm not sure what causes this, but tcsh's autologout feature gets very
confused under NetBSD. Specifically, I had it set to prompt for the
password after 10 minutes of inactivity, but it would not accept the
password. So I've had to turn this feature off for the time being. (It
works fine under Linux and SunOS.)

Has anyone else encountered this?

-- 
No one can earn a million dollars honestly.
     -- William Jennings Bryan