vsftpd and kerberos

Hello,
I have a problem with properly configuring vsftpd on RH9,
because it screams, that the ftp server is running and ready and
"530 Must perform authentication before identifying", I read
many news on google and now I know there is something about kerberos,
but I don't really want it, so how to switch off the kerberos auth. system
and run vsftpd slightly without any of the 530 indications?

For any help I'll be very grateful.

Thank You.

Best Regards.
Jack
(E-Mail Removed)