> 	1). The primary server will suddenly decide it's not
> authoritative.

can you be specific about what symptoms you're seeing?  (showing the
contents of named.conf, and resolv.conf as well as output from
nslookup commands is a good start)

> 2). With an nslookup, the IP address showing the nameserver's addy is all
> 0's (when entered from the local keyboard on each machine). This may be
> normal -- I'm not sure.

this is normal.

					- Bill