From The CBC:
Videotron said an electrical problem was responsible for a major outage this afternoon that affected all its subscribers in Montreal Wednesday afternoon.
The company's director of communications, Marc Labelle, said a short circuit on the company's central electrical distribution panel in Montreal cut cable television, phone and internet service to 896,000 customers.
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My Comment: I have both Bell Canada and Videotron services. This is the first time (for me) that my Videotron internet service was hit. My Bell service gets a problem about once a year.