The next beta version of BackTrack, the popular LiveCD security tool suite for penetration testers, security researchers and computer professionals is now available. The beta version is said to be "very stable and usable" by the developers.
Official annoucement here, download page here.
You can download the ISO here: http://www.remote-exploit.org/cgi-bin/fileget?version=bt4-beta-iso
You can also get the VMWare Image here: http://www.remote-exploit.org/cgi-bin/fileget?version=bt4-beta-vm
There is also an install guide, as there is currently no GUI installer.
Grab it now!