Dan Kaminsky has recently discovered security hole on DNS server, the scary part : it's design flaw! A lot of vendor affected (djbdns is one of the lucky few ). Detailsavailablehere.
Fellow debian admins, you know the drill, apt-get update && apt-get upgrade quick!. Lesson learned from this incident, quoting Kaminsky:
Excellent design protects you against things you don’t have any information about.