why does mutt ask twice for the password in Hardy?

[H.S.]

Hello,

This is a bit strange thing for me. On a machine running Hardy, if I
start up mutt, it asks for my password twice. I have tried to find out
why that is so, but I am not sure what I am looking for.

I check my mail from an imap server on our LAN in our univ. If I try to
check the mail from another machine (not running Hardy), mutt asks for
the password only once. So that rules out .muttrc (/home is same in all
machines) and the imap server and leaves on the version of mutt. At
least that is all I can guess.

Any way to see what is causing this and how to solve this? The version
of mutt on Hardy is 1.5.17+20080114-1ubuntu.

Thanks.
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