Just got on this thing (perhaps very belatedly) - root server trouble?

About 30% of the nameservers which supposedly
are authoritative for .COM domains are either:
  1) Non-existant (they don't resolve to an IP address)
  2) Unreachable
or 3) Don't know what "." is (!)

This might say more about the status of Internet reachability at a
particular point time and/or from a particular place in the Internet.

This exercise doesn't seem like particularly good science...