I have Windows 7 and the latest AVG anti virus and Windows firewall enabled. My modem is a Cisco model DPC2420, my router is a Belkin N1 Vision.
I set a permanent IP to my home network. When I try to enter to Amazon (for example) when I am directly plugged to my modem, the page is not fully loading. When I use wireless I'm getting the full website.
When I'm using V-tunnel it's working well. I asked my cable company to get the permanent IP.