It would appear that I am one of the unfortunates.  Given that ATT does not seem interested in fixing the problem I have no choice but to move on.  My husband works from home frequently, that can not be done with the internet disruption.  The outages are far more than 2-4 seconds.  The longest has been about 19 minutes.  The worst has been 15 disruptions within an hour, each one lasting 1: 38.   I was watching Heroes, and I timed them.  Odd that they were all the same length and not one occured during a commercial.  I missed half of the show.