I've purchased and am trying to use a Dir-655 rev. B, running firmware 2.00NA. I have two hard-drive style Apple Tv's. They can see my wireless network, and after putting in the passcode, can connect. They at this point are visible to iTunes and can play any/all of my content. However after a period of non-use, they go into standby mode, and upon waking, can no longer connect to my network. I have to re-do the wireless each and every time. Any suggestions or ideas as to why this would be happening?