[Mailman-Users] problem setting admin password

[Ian]

Someone who runs an Linux machine was nice enough to set up a mailing list 
on it for me. However, what he set as the password is not working. He's 
given me root access to the machine and i've tried using mmsitepass to 
change the password. It appears to work...i dont get an error message and 
it says the password is changed. but when i go to try and login it says its 
the wrong password.

Can someone tell me what might be wrong and how i can go about resetting 
the admin password?

thanks