Hello,
 
I am getting pam authentication error for all my programms. POP, smtp and FTP. 
I am using: 
Centos 4.6 
Postfix 2.5.2 
Dovecot 1.015 
ProFTPd version 1.30 
 
and Webmin version 1.420  
Virtualmin version 3.572.gpl (GPL)  
 
Any help will be highly appreciated. 
 
Thanks in advance 
Onik