I love this live cd, you can also encrypt the free space with lux, very easy (and slow). Itīs debian based, with security programs and fast. Of course you can update the packages. You can download it in English, Spanish or Italian. I am using it everyday http://www.freepto.mx/en/download/
$10.00
Knoppix Live GNU Linux System 9.1 on Bootable CD / DVD / USB Flash Drive
$9.99
Knoppix 3.4 Linux installation CD
$15.00
Linux Knoppix 4.0.2 Installation Disc
$39.99
Knoppix 9.1 Live Linux GNU Bootable USB Flash Drive USA
$19.99
Knoppix Linux Bootable OS v8.6 "Original Live Operating System" 32G USB Stick
$20.30
$12.00
KNOPPIX 9.1 LINUX INSTALL & LIVE DVD
$9.99
Acer Aspire One 9 inch Netbook ZG5 512MB RAM 8GB SSD HD Knoppix Linux WiFi VGA
$79.99
Knoppix Linux Bootable OS v8.6 "Original Live Operating System" 16G USB Stick
$19.95