I have a NW6.5 SP2 box hosting DNS here, and everything has worked smoothly
since inception. Last night however, DNS resolution for many external sites
stopped working. I unloaded named and loaded it back up and get the same
problem. When I ping a site I should always get a resolve, even if the site
is not pingable. However, 80 - 90% of the sites I try to ping return a
message about resolv.cfg or netdb. Which is the generic error message.

I thought maybe the sites I was still able to ping were cached, but even
these sites work sporadically.

Where and how should I start troubleshooting this?