I recently upgraded from 6.0 to 6.1. My goal was to get Samba working with NT 4.0. Before the upgrade, I could not connect to NT, and Samba was reporting that it could not do a reverse DNS lookup on 192.168.0.3. So I decided to bring up named. I had heard that there were problems with named at 6.0, so I upgraded to 6.1, and then to bind 8.2.1-7. I can't get named to start at boot. Even though I can issue /etc/rc.d/rc4.d/K45named from root and it works just fine. In fact, I've switched my private network over to using it as my default name server. When I tried to hook up Samba, I found that my config file is missing. RPM shows that samba2.0.5a-12 is installed. Also, I many different apps, like xterm and gmc die with intermittent segmentation faults. They can be restarted immediately with no problems.
Run ntsysv to enable named and samba at boot. Intermitent segmentation faults are almost always caused by bad hardware (overclocked CPU's and flaky memory are the two leading causes). We have not had any reports of these types of problems from other 6.1 users.