On Fri, Apr 26, 2013 at 2:04 PM, Janowiak, Edward <Edward.Janowiak@chartercom.com> wrote:
I mounted the iso to /mnt and used "cobbler import --path=/mnt --name=RHEL-5.5 --arch=x86_64".

Umount /mnt, delete the 5.5 distro, restart cobblerd, and then redo the mount/import. 

I have seen this issue (a few months back) where cobblerd for whatever reason still sees the old ISO filesystem despite the files not actually being there. It seems to have been an issue with systemd, so if you're on F17 that could be the problem.