Norton AntiVirus 2009 Blocks Network Access

I installed Norton AntiVirus 2009, ran LiveUpdate, did a Full Scan, and excluded Famatech Remote Administrator.  After installation I found that I could no longer access either the Internet  or the rest of the computers on my LAN.  I couldn't even answer tell Symantec why I was removing NAV from my system!

 

After excising Norton AntiVirus 2009 from my system, I can once again access the Internet and my LAN computers.

 

I am using a WPA-protected Wireless Network.

 

What do I need to do to Norton AntiVirus 2009 to keep it from interferring witht this fundamental operation?  I've fought NAV before, but this is a new one.