clear DNS cache

[Steven Stern]

My system is set to go directly to the OpenDNS name servers for DNS
resolution.  However, the results I get from "nslookup" differ from what
I get if I query the same name server from another machine with the same
resolv.conf settings.

That leads me to believe that DNS info is being cached locally
somewhere. I don't  have bind or nscd installed.

Where is this caching taking place and how can I clear/flush it?

-- 
-- Steve