Noted at http://forums.cnet.com/7723-13973_102-612079/samsung-ue46f8005-tv-crashes-wireless-network/?messageId=5547266#message5547266
Very old issue and only those new to this or not exposed to these networks would declare it's the TV.
I just bought the Samsung UE46F8005 tv and every time I try to stream a movie or something from my NAS, my wifi connection crashes after a while. Not just the tv's connection to the network, but the complete network itself crashes, and I cannot connect from any other device before I shut down the tv. Then the connection establishes itself again immediately, which is very clear from a wifi analyzer app I have on my phone. I have tried changing wifi channels several times and I also have the latest firmware on my tv and router. The tv is not far from the router, and I have the following settings on the tv:
Automatic IP: 192.168.87.112
Subnet Mask: 255.255.255.0
Automatik DNS: 22.214.171.124
Does anyone know what the problem could be?