So Damien Bergamini and I have put together a driver for the Ethernet controllers NVIDIA put out.
They don't provide documentation or even have a list of names for the chips, but will happily agree to let various parties distribute a driver kludged around a binary blob. Suffice to say, we have have not taken this approach. Snapshots starting 5th Feb for i386 and amd64 have the driver (nfe) included. What we would really like now, is some feedback from a wide range of nforce based systems. Send a dmesg and a mention of whether you have any issues to damien ([EMAIL PROTECTED]) and me ([EMAIL PROTECTED]).