For quite a while now, Apple has dumped the old lookupd daemon and it may have confused some users. “How am I supposed to flush the DNS cache?” or “How can I restart DNS services without a reboot?” Fortunately, Apple now supplies dnscacheutil which takes care of everything and provides a great command-line interface for DNS tools within the OS.read more | digg story

there is an error: the right name for the command line util is \’dscacheutil\’ (whithout the \’n\’), not dnscacheutil.
Good catch!
Nice one. I have stumbled and twittered this for my friends. Others no doubt will like it like I did.