i'm getting the same error..
gigabyte mainboard with 780G chipset (so that is an ATI HD3200) with a Samsung 37" 1920x1080 screen.
after installation i see a screen with a loading bar, and it goes to this:
Debian GNU/Linux 5.0 untangle.example.com tty1
Untangle login:
i've tried root / root and untangle / untangle, but that doesn't work.
according to the manual i should get something like a wizzard, but i don't and i don['t know the login
oh btw: sometimes after a few reboots i get the message: not supported.
can anyone tell me the default root password? i can't find it in the documentation or on the forum