Earlier today, Fyodor announced the release of a new beta of Nmap.  Nmap 5.10BETA1 has a number of improvements including UDP scanning, NSE  scripts, host fingerprinting, and hundreds of other changes.  More information is located at seclists.org/nmap-dev/2009/q4/476 .  Time for all of us to upgrade our software prior to any vulnerability assessments you may have planned for your organizations. 

Scott Fendley ISC Handler