[horde] strange login problem

[Philippe Trolliet]

hi,
one of my users said sth about a strange login problem.
he had one password but the another one did work too.
these are the two passwords, one password is the real one and the other is a
password was never used by him on our mailserver.
password 1:	keht77&0nme
password 2:	keht77&0nba
the user could login with both of the passwords.
is it possible that it has something to do with the '&'-sign?
the user changed his password from the initial password he got to one of the
above with the passwd module in horde.
any idea?

regards
philippe