I did the installation pfsense 2.0.1 on a Dell PowerEdge R210 II server 64 bit. The installation happened with a few moments of sluggishness but was completed and became functional. The server is new.
When configuring network interfaces, I observed that the pfsense attributing the same for two v4 IP interfaces, then checked the interface and found that it is a dual network card broadcom (linked in the same slot) and pfsense only being recognized with a plaque . When you activate the card, even changing the MAC server webinterface has paralyzed and no longer allows access, but the server is still responding to ping the network.
Anyone have any tips to fix the problem?

Thank you.