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