He said, she said: Is Comcast prioritizing traffic or not?

Comcast, once again, has some explaining to do.

An engineer has conducted experiments that he says show the nation’s largest broadband provider is prioritizing traffic -- something it’s not supposed to do under the conditions the government imposed when the cable company bought NBC-Universal. At issue are the methods and arguments Comcast uses to exempt some of its Xfinity on-demand traffic from its broadband cap. Comcast categorically denies it’s prioritizing traffic, but the issue is sure to dog the cable provider in the near term, much like the back and forth that ensued back in 2007 when it was caught blocking P2P traffic.