We've got a new batch of machines and have been unable to get them to
download /boot/initrd from the the tftp server.

It gets to 52% and just stops dead. All we can do at this point is reboot.
It will boot fine from the Zenworks boot CD however.

As far as we can tell it's just the download thats happening at this stage,
so we're stumped as to the cause. All our other machines boot without a