HUH?

[gb spam]

> THEY ARE BAD DOWNLOADS

bad downloads can easily be proved with qemu:

    qemu -cdrom the-first-boot-disk.iso -boot d

if that boots, then it isn't the download.
if that works, you can eliminate it being the cd's you're burning with

    qemu -cdrom /dev/cdrom -boot d

nb: replace /dev/cdrom with whatever is appropriate

if you don't have qemu, then:

    wget http://fabrice.bellard.free.fr/qemu/qemu-0.7.0.tar.gz
    tar zxvf qemu-0.7.0.tar.gz
    cd qemu-0.7.0
    ./configure
    make
    make install

(ironically, these compilation instructions won't work on fc4t[1-3],
you'll have to use the older (supplied) version of gcc)