Just downloaded 7.4 EN. It passed the md5 test, and the burn was verified. But running knoppix testcd, I ended up with a frozen desktop display with text in background reading:

flame name "Elektrosmog size 256x1538" etc. The swirly blue image obscured most of the text.

I rebooted, and saw no error messages, but the boot was the slowest I've seen from a DVD, it showed the root prompt after displaying "graphic environment being loaded - please wait". It took minutes to display the penguin icon, and then finally froze the system with the same Elektrosmog screen.

I had to hit reset, nothing else worked to shut down or reboot.

I tried again, setting acpi=off, but got the same result. The Intel 83865G graphics controller seems to be recognized. No idea what the problem is.

I then tried it in my UEFI laptop, and that system didn't even recognize a bootable efi device, although the efi/boot directory is on the disk, and seems to be complete. Knoppix 7.2 was able to function under the UEFI environment on the same laptop.

Finally, I tried booting the LiveDVD on my ancient Compaq Presario, and there it worked, offering the normal desktop menus with the "compiz" desktop. But operation was so glacially slow, I couldn't really test it. Still, it loaded faster than on the much newer Intel Desktop with a cpu six times faster, and much more and faster RAM.

I downloaded my copy from TUWien