I would like to say that I am glad that someone has brought this issue to light. I have been dealing with the same issue for over a year. What I finally resorted to doing is hardcoding the comcast DNS names into all the machines on my home network hsd1.xx.xx.comcast.net. And that "seems" to have aleviated the issue. I was offered when i called into Comcast to upgrade to the XB6 modem which I am going to pick up tomorrow. The problem with that is, other people who are not forunate enough to understand what is going on behind the scenes is something that is a huge security risk. Like if the utopia.net dns changed the dns entry for google.com to the ip address of yahoo.com. Now this isnt a huge issue, but what if they forwarded your from the bank of america login to a phishing site, that would be a definite concern. I hope that the engineers at Comcast take this very seriously and look into the firmware issues on the XB3's and either recall them from the market or create a patch so this doesn't continue to occur.
Also i have read plenty of forums on the web. Avast Anti-Virus will definiately delete the record from your registry editor, but that is simply a band-aid. It will come back and it won't work so easily the second time.
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