Comment 19 for bug 1883040

Found it :) (thanks to @dax on IRC)
http://archive.ubuntu.com/ubuntu/dists/groovy/main/installer-amd64/20101020ubuntu621/legacy-images/netboot/mini.iso

it boots on both boxes (to installer boot menu). I won't overwrite d755 so only went further on dc7700; it commenced debian installer, i went language, keyboard, it recognized network, I selected mirror and it started downloading components... I installed (full disk), including basic server, lubuntu desktop & ssh-server

The install worked perfectly (no date in the /etc/apt/sources.list) file where I usually look for install .. but I can provide /var/log/installer/syslog or whatever but quick glance & all looks good.