Discussion here: http://www.broadbandreports.com/shownews/62444More Comcast DNS Woes
Second outage in six days
Fresh off the major DNS outage of last week, users in our Comcast Forum report more widespread DNS issues tonight. Members are sharing various workarounds until the issues are resolved.
Workarounds if it happens again: http://www.broadbandreports.com/forum/r ... 5#13155426
I have switched over to alternative DNS servers and am running very quickly without problems. I suggest you do the same.