Helix 3 has been released. This forensics centric live CD is now Ubuntu based and includes updates to many of the host programs. From the site:
"Helix has been modified very carefully to NOT touch the host computer in any way and it is forensically sound. Helix wil not auto mount swap space, or auto mount any attached devices. Helix also has a special live side for Incident Response and Forensics."
The new version of Helix can be found at
http://www.e-fense.com/helix/