I recently noticed unexplained network traffic on my iMac. I downloaded and installed WireShark. A capture on my home network shows the Uverse's 2Wire Router making non-stop round robin ARP broadcasts (who has 192.168.1.XX? Tell 188.8.131.52) on the network.
In the past six weeks I have had a few live HDTV, HDTV recordings, and VoIP drop out. I had a service call and the solution was to swap out the router. Afterward my new router started dropping my wireless connections. It seems that I can only keep one or two devices on my wireless network at a time! Oh, and the new router is still ARP broadcasting. I have another service call scheduled for this morning to fix my wireless.