samba - Mar 2003 - Help with password changing problem

I am having an issue changing local unix passwords - when I attempt to change my
root password, I get this error:
 

[root@unix01]: passwd    
Supported configurations for passwd management are as follows: 
    passwd: files 
    passwd: files ldap 
    passwd: files nis 
    passwd: files nisplus 
    passwd: compat 
    passwd: compat AND 
    passwd_compat: nisplus 

[root@unix02]: passwd root
Supported configurations for passwd management are as follows: 
    passwd: files 
    passwd: files ldap 
    passwd: files nis 
    passwd: files nisplus 
    passwd: compat 
    passwd: compat AND 
    passwd_compat: nisplus

my nsswitch.conf reads:  passwd:  files winbind

if i remove winbind from nsswitch.conf, it works.  help! 

 

thanks

Jenn