Gopher John (and others):
Pretty obvious we are having the identical issue here in the Midwest. I think Avast must have done something to fix this because I'm getting a constant connection to the Avast server, no matter which remote address my PC connects to. To test, I've rebooted and manually disabled the streaming updates through the GUI and no matter which remote address Avast connects to, it's now a steady connection...no more connected/disconnected like it had been doing all week (actually this has been going on since Christmas). In fact, as I type this three more streaming updates. Checked with another user in my area and they confirm streaming updates and a steady Avast server connection through their different ISP.
I'll continue to monitor the situation and check those server connections and post results here. If people can do the same perhaps we can make sure this is permanently resolved.
Thanks.