You will recall that a while ago I ran into this bug often. There is no support for Linux users. It's basically a congestion issue, if you run into congestion on the higher channels, the modem totally craps out. Then you have to do a power cycle. Hits mostly when using bittorrent or ip phones because of multiple connections.
At the time I really screamed. First I went to the CRTC that this was a long-standing issue and was equivalent to abuse of monopoly, since it eliminated ip phones. They had looked into this and declared it a service issue (wieners!). Then I went to the service reporting thing and magically I was switched to an empty channel. I had the high-power ladies of 'Escalation' pursuing me for weeks.
Trouble is that an empty channel always becomes filled in a few months. This has happened to me several times. Now I'm getting the whole thing again. I shall soon go through my procedure. :(