It's been nothing but a nightmare since i've gotten the 540. My firmware is 1.1.42 and I have a very basic setup with only a couple of standard firewall rules. The 540 keeps dropping the wan connection. Everything is static on the LAN side and DHCP is turned off on the 540 with Static IP for the WAN. I've factory reset twice and reconfiged everything exactly the same with of course the same results...help!!!