Canadian cable operator Rogers has been one of the most aggressive ISPs in terms of playing whac-a-mole with P2P users over the last five years. In addition to service tiers featuring some of the lowest caps and highest per gig overages in North America, Rogers has a long history of using various methods to throttle P2P users, even when encrypted. Judging from numerous posts in our Rogers forum over the last year, Rogers' deep-packet-inspection based throttling technology has occasionally crippled user speeds substantially, and in some cases the technology has impacted non-P2P applications. Back in October of last year, Rogers admitted the problems in our forums:

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Hey all - we've been following the conversation here and wanted to jump in with an update. As some of you are aware, Rogers recently made some upgrades to our network management systems that had the unintended effect of impacting non-p2p file sharing traffic under a specific combination of conditions. Our network engineering team is working on the best way to address this issue as quickly as possible.

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Fast forward almost half a year, and Rogers is now acknowledging that their over-enthusiastic traffic management platform has also been accidentally throttling World Of Warcraft users. Responding to complaints by Canadian regulators, Rogers says they fixed one issue causing accidentally WOW throttling, only to have another pop up. Rogers says this new problem won't be fixed until June:

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"Our tests have determined that there is a problem with our traffic management equipment that can interfere with World of Warcraft," said Rogers. "We have been in contact with the game manufacturer and we have been working with our equipment supplier to overcome this problem. "We recently introduced a software modification to solve the problems our customers are experiencing with World of Warcraft. However, there have been recent changes to the game, which has created new problems. A second software modification to address these new issues will not be ready until June."

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Rogers has told some users that the problem only occurs when customers use WOW and P2P programs at the same time, though a number of subscribers insist the throttling occurs whether they're using a P2P application or not.