CentOS - May 2006 - authconfig and Segmentation fault

List, I configured my system to use Kerberos for authentication using
authconfig, so I returned back my configuration of my system to use MD5
passwd and shadows pass using authconfig but when I uncheck "Use
kerberos" a Segmentation fault comes to my screen:

[root at netreporter.domain:~]# authconfig
Segmentation fault

I tried to check others options but I receive the Segmentation fault
again!

I'm using CentOS 4.3 + Updates.

Regards
Israel