I just got a DIR-655 and set it all up pretty easily. I have 6 wired and 3 wireless. All work fine and all are set to use DHCP. But if I go (in the router) to the Lan Computers list under Device Info, three devices (2 wired, 1 wireless) do not appear. I do have a switch added to the system, but of the three devices connected to it, 1 shows in th Lan Computers list and the other 2 do not.
Since everything works, I'm mostly just curious why this is. Every previous router I've had showed everything correctly.