In September 2011 CBC (Canadian Broadcasting Corporation) reported that Canadian ISP Rogers had used traffic prioritisation (i.e. breaking Net Neutrality) which negatively impacted online computer games.
CBC reports that CRTC (the Canadian Telecoms Regulator) too action after a complaints from the Canadian Gamers Organization. Rogers recognised that the problem impacted World of Warcraft and it is suspect that many other games, including Call of Duty Back Ops, have been impacted.
Full Story: Rogers asked to fix game throttling problem (16 Sept 2011)