Continually Losing Signal with Netflix Roku Player

Hi,

Recently purchased the Netflix Roku player with a Netgear Wireless Router. After initial setup, played well for awhile, then lost picture every 5 min. or so. Roku suggested disabling the firewall in the router which I did not want to do for obvious reasons but I eventually tried. It did nothing to correct the problem. Netflix suggested pulling the plug on the router for 10 seconds. That worked once, never again. Odd thing is I don't always lose the picture but it does happen every few days. I have even tried going to the config. page and reinserting all pertinent info. Again, that worked once, and only once. Any tips would be greatly appreciated. This is frustrating to say the least.

Many thanks...