tedster - 8:08 pm on Sep 20, 2010 (gmt 0)
That was one of my early thoughts, too, especially when the occasional spike is observed and then it goes away.
But it just doesn't make sense in the big picture. There are some very strong servers represented in the above reports. One I know of uses Akamai as the CDN. And I doubt that even Google can monitor traffic so well that they notice a server response slow-down and change the traffic they send in nearly real time.