I've been running Knoppix V6 live cd on my usb stick for a while and thought it was time for an update at it was several years old.
I donloaded "KNOPPIX_V7.2.0CD-2013-06-16-EN.iso" and installed it on my USB. I verified the MD5.

Unfortunately, it totally freezes while displaying the text KNOPPIX logo at the very beginning of boot.