Since some time earlier in the Summer, I’ve noticed this appearing a lot in a shells:

You have mail in /var/mail/...
You have mail in /home/.../Mail/...
You have mail in /home/.../Mail/.../...

and so on, yet when there really is new mail, the message is correct.

I’ve filed it as bug #551487, but I can’t help thinking someone else would have noticed this by now if it was a bug (after all, bash isn’t exactly a low-popcon package), so I’m sure I’ve just mis-configured something.

Ideas welcome on a postcard.