For an Ubuntu file/web/FTP server, I think this will be the best bet, but it doesn't have a dual Gigabit LAN, just one...
Intel BOXDB43LD LGA 775 Intel B43 Micro ATX Intel Motherboard
http://www.newegg.com/Product/Produc...82E16813121391
I know folks here don't like Intel mobos due to lack...