Hi, I use one of those nvidia based boards. (asus A7N8X)and I thought I would jump in the conversation. The only thing closed source on it is the nvidia made network card. There is also a 3com NIC on it so there is not an issue. Most of the problems with that board are solved with the upcoming 2.4.21 and the latest 2.5 kermels.9although I havent tried everithing- Dont need them) Everything else would work without any drivers from nvidia. And I have to admit that it is a very nice board for audio. I haven't seen an underun for quite a while now.