Linux + Quad Nic
Just setup Fedora 10 with an Adaptec ANA62044 network card. It worked flawlessly out of the box. I now have 7 ethernet ports in that machine.
07:04.0 Ethernet controller: Adaptec ANA620xx/ANA69011A (rev 03)
07:05.0 Ethernet controller: Adaptec ANA620xx/ANA69011A (rev 03)
07:06.0 Ethernet controller: Adaptec ANA620xx/ANA69011A (rev 03)
07:07.0 Ethernet controller: Adaptec ANA620xx/ANA69011A (rev 03)