said by CoxTech1:
The DNS issues aren't upgrade related. We're actually investigating a customer equipment related cause but don't have more to say at the moment. You can try the following which I believe will work as an effective workaround:
»ww2.cox.com/residential/support/ ··· 00000000
Same problems here in Tucson. Tried the workaround suggested by CoxTech1 but it didn't work.