Hello All,
We were discussing DNS caching and the bind configuration. However, bind is a DNS server whereas we only want a DNS cache that updates itself automatically. Maybe I understood it wrong but on the net I found this link for DNS caching. It uses a package called dnsmasq. It works on my system. First time I do dig google.com it takes 42 ms. second time 2 sec.
http://ubuntu.wordpress.com/2006/08/02/local-dns-cache-for-faster-browsing/