Fixed! ;D
Well the new Intel NIC came. Installed it and disabled the on board Realtek NIC. Still no joy. I tried every network reconfiguration I could think of, tried hibernate instead of sleep, still no joy. As a last ditch effort I uninstalled Zone Alarm firewall and let the Windows firewall take over. Problem fixed. I had been running the Zone Alarm firewall for months, I don’t know why it suddenly broke access to my WHS when coming out of sleep mode, but it seems to be working fine now.
