For some reason this router will not stop locking up. About every 12 hours of operation it stops passing traffic from the WAN port to the LAN systems. All that is required is a power cycle, and that keeps it up for about another 12 hours. This is extremely frustrating, and if I don't find a solution I will be forced to purchase a different router. I have tried using the router with different systems, using different ports on the router, and setting all kinds of different configurations for the router. The AC power is plugged into a UPS system, so power is not causing the problem unless it's the transformer. I could find absolutely no support in your knowlege base for the router, and there appear to be no firmware updates for the router. Please get back to me as soon as possible with possible causes / solutions to this problem.