AT&T is a telephone line... Time Warner is Cable.. It can make a difference.
In your case, if your new cable network needs the DNS Client service enabled to allow internet connection, then you'll need to do so.. Unfortunately, with both a large HOSTS file and DNS Client enabled, you may have a real problem with the "slows". It may cause the computer to creep along at an unbearably slow pace . You may need to find a different ad-blocker for your system, or a much smaller HOSTS file, if the computer's performance suffers greatly.
I had a similar problem on a large government network, when using Windows 7, and I was unable to use a large HOSTS file on certain computers.
Hope this helps.
I have been using this hosts file for some time without no apparent problems. I recently noticed that a number of sites were taking some time to "load" up. Remembering that "MVPS" suggests that the DNS client be reset to "manual" I did just that. Than I lost my internet connection. Resetting DNS back to automatic, I got the internet back. Did this twice. The only thing that has changed "recently" is that I now have Time Warner Cable for my "phone" service as well. Before I had AT&T for my phone, obviously on a different "line". So I now have a new modem box for the phone and the "internet" together.
Any suggestions. Dell computer, Windows XP Pro, SP3, all updates, no other problems. Run regular 'scans' with Microsoft Security Essentials.
Thanks in advance,