According this AP story, Cox is interfering with file-sharing applications used by their customers just like Comcast was.
A study based on the participation of 8,175 Internet users around the world found conclusive signs of blocked file-sharing connections only at three Internet service providers: Comcast and Cox in the U.S. and StarHub in Singapore.
If they will block file-sharing apps, one can assume they will block anything they deem to be decremental to their revenue, including VoIP, video, etc.
It’s interesting that, so far, none of these studies have concluded that telephone companies are blocking their DSL broadband customers. Does that mean they aren’t doing it? Or are they just better at it, so that it isn’t as easy to detect? Or, are the journalists just afraid to rock that boat for some reason ($$$)? 🙂