Many of us with cable internet connections are well aware of the problems that arise when cable companies specifically block certain applications, such as the recent problems with Comcast blocking Bit Torrent.
It looks like there may be a similar problem with Time Warner and Roadrunner Cable, as many of their customers have found to it difficult to impossible to play due to lag and latency issues for some time, reports the New York Post.
To some extent, both TWC and Blizzard have been blaming each other for a while, with Time Warner claiming they have done nothing to block any packets or traffic related to World of Warcraft, and Blizzard pointing out that all of the players on the east coast with these problems are Time Warner/Roadrunner cable customers.
It's difficult to say if Time Warner is being genuine in their confusion, since other ISPs have lied about similar issues in the past, but there are signs they are taking this seriously. They have contacted Blizzard's ISP, and players are saying that they have been contacted by Time Warner representatives looking to fix the problem.
Seeing the issue making it into print media, perhaps, will give them the extra initiative they need to get it completely sorted.
Recently members of my guild have been using a tool called 
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