Looks like Cox Communications is following in the footsteps of Comcast, having been found to be interfering with file-sharing by blocking its customers' Internet connections. A study based on research by The Associated Press and Krishna Gummadi at the Max Planck Institute for Software Systems found that about 54% of Cox users were blocked while using file-sharing services. About 62% of Comcast users were blocked as well.
What's more, is that other ISPs have come forward, admitting to blocking Internet connections for users, claiming such blockage as a necessary tactic for maintaining connection speeds and bandwidth allocation. These issues have caught the eye of the FCC, and eventually led Comcast to state that it would cease with selective blocking based on file-sharing users.