This machine is connected to via Ethernet cable to a router which also serves wireless devices in the house (laptop, streaming tv box, ipod). It is connected to the ISP via a cable modem. That's it. The only service related setup change recently has been to install OpenDNS at the recommendation of some techs. at Roku to improve the Netflix streaming reliability/capability. Any chance that could be messing with things? I could try uninstalling/re-routing DNS. I'm not sure it has improved anything.