> I just got the cryptic:
> 	$ mail
> 	No mail for ubluit
> out of mail.
> 
> Why?  What kind of error message is that?  I finally established that this
> wasn't a side effect of some nasty cracker trick, but rather, just a
> temporary inability to identify me.

It's a pretty lame error message.  IMO, mail should abort with an
appropriate message rather than carying on with user name "ubluit".
Feel free to submit a PR on this so it doesn't get dropped on the
floor.

> Is there a no-user period during password changes, or something like
> that?

There might be a race condition during updates.  If so, I think that's
a bug too.

	--jtc