(NB: originally rejected because Package: was not first, but I copied from your example in which Package: was also not first)
Performed a mostly default install of the current stable as of yesterday on a PIII with a single HD, which I specified should all be used and should be reformatted. I then discovered that my login user could not use 'sudo'. Also could not login as root to fix the problem on the main login screen. Also, after executing 'su -' to become root, could not use any X-windows apps, so had to use nano to edit /etc/sudoers.
Not something a naive user would be able to handle.