Now, i must say, that after i install pfSense 1.2 FINAL, as i describe here http://forum.pfsense.org/index.php/topic,6774.0.html, i found that Router Board 44G function properly.
So this combination of hardware and software works great:
Mainboard: Intel D201GLY - bios LY66210M.86A from 1/4/2008 - http://www.intel.com/products/motherboard/D201GLY/index.htm
NIC card: RouterBoard 44 G - http://www.routerboard.com/rb44.html
1U rack case - http://www.emko.cz/emko_cz/produkty/skrine/miniitx/em-161.html
pfSense 1.2 FINAL