[Info-vax] SSH mysteriously stops working

[Phillip Helbig---undress to reply]

Although I REALLY didn't change anything, SSH has mysteriously stopped
working.  When going out, I get asked for a password when normally
that's not the case (but then things work).  When coming in, there is a
message that they key has changed and I get prompted for a password when
normally that's not the case, then it looks like the password is invalid
(although it actually is valid, as logging in without SSH shows).  The 
same behaviour for accounts which always prompt for a password.

Any ideas?

I have to admit that I don't know much about SSH.  I set it up about 4 
years ago and since then it has "just worked".  A few months ago, I set 
things up so that some accounts didn't get the password prompt, and that 
has been working fine since then as well, with no effects on accounts 
which prompt for passwords.

There doesn't appear to be anything strange about the timestamps in 
[.SSH2].