Problems with medium check for FC2 despite of proper checksum!HELP

[Mark]

> A workaround would be to loopback mount the iso images, copy them
> somewhere, and do a network install after adding the isolinux/vmlinuz
> and initrd.img to grub.conf, or using boot.iso, as outlined 
> in numerous
> posts.
> 
Sounds interesting, is there a link to a doc for this?
If you don't have one handy don't worry, I'll probably find them on
google...

Thanks!