Webmin creates unnecessary rpmorig files

A few releases back, maybe around the version 1.240 time frame, Webmin started creating two unnecessary rpmorig files on one of my systems every time I do an RPM update. Here is a recent log:

# rpm -Uvh webmin-1.256-1.noarch.rpm
Preparing... ########################################### [100%]
1:webmin warning: /etc/pam.d/webmin saved as /etc/pam.d/webmin.rpmorig
warning: /etc/sysconfig/daemons/webmin saved as /etc/sysconfig/daemons/webmin.rpmorig
########################################### [100%]
Webmin install complete. You can now login to http://Server:10000/
as root with your root password.

Looking at these rpmorig files, they are exactly the same as the new files, and I have never modified them. This only happens on one of my systems (running Fedora Core 3), but I have done many Webmin updates on this same system in the past, and this problem only started recently. Also, it only happens for Webmin, not Usermin or any other RPMs.

Status: 
Closed (fixed)