user migration

[mvalites at banta-im.com (Matthew Valites)]

>I am trying to move about 40 users from one server to another, maintaining
>their passwords. Copying the /etc/passwd and /etc/shadow and /etc/pam.d
>files would be enough, I would think. But ssh doesn't work, 
>
What exactly do you mean by "ssh doesn't work"?  Can you connect but not 
authenticate?  Are the permissions (group & useres) on the users home 
dirs correct? 

>though already logged in users can SU to another user. Is there something I am missing?
>  
>
I believe this can happen when you add the users but don't run pwconv. 

~Matt