Accidental discovery found.
I was attempting an install on Ubuntu 8.04 as 6.06 Grub will not install correctly on the system I am testing with. I had planned to try using the install method for 7.10 (link here) and instead I left the room and forgot that I had not done it yet. When I came back I installed 5.05 NE on a clean 8.04 with the DNS changes made (link here).
While it installs and everything seems to load, what might I run into that will be broken?