Intermittently, and not at the same time, computers connected the network will redirect to
Stop-online-piracy.com (may not want to go there). The domain responds with the source:
<div id="Message"> ERROR: This web site encountered an error (40100), please notify your Technical Support.</div>
just an error, .nothing hidden there.
It is privately registered. Seems like a sham trying to impersonate a Cease&Desist. A Google search of the domain yield no references.
The other strange part is that right before it happened the internet connection gets really slow AND the wifi signal bar goes down. This signal bar could just be Windows 7's adding in connection speed into the task-bar icon. (or it could indicate something really interesting...) The wifi is using WPA2 if that matters. Not many Computers are plugged into an Ethernet so it's unknown whether or not it affects them.
edit: When I said it wasn't at the same time, I meant that not exactly the same, but all within a few minutes of each other. I has subsided now. Also is there anything I can do if/when it happens again? It seems like it comes in waves.