Yes I did burn at 4x & confirmed the md5 checksum, I don't think the download was corrupt, because I first bought the KNOPPIX 3.7 CD from http://www.cheeplinux.com/ & exactly the same thing happened.

I just bought an old PIII 500Mhz PC w 128MEG RAM & 8GB HDD. I am planning to install Debian Linux on it but first I will format the HDD with FAT16, run the KNOPPIX CD & see what happens.

Ajak.