BTs Top Ten Causes For Slowness

I have been experiencing some heavy packet shaping by my usually pretty good ISP BT, when I emailed them to ask what was with the excessive packet shaping I got this reply.

If there is an EMI then the connection may drop or you may experience slow browsing. Please make sure that the modem is not placed near any of the following electro magnetic devices such as:

1. Halogen desk lamps near the modem or telephone line, especially those with dimmers.
2. Any electrical dimmer switch.
3. Electronic devices, such as stereo speakers, PC speakers, televisions, monitors, microwave ovens, etc.
4. Routing the telephone line parallel to an AC power cord for more than a few inches.
5. Electronic insect electrocution devices (bug zappers).
6. Low quality 900MHz cordless telephones.
7. Any other emitter of high frequency electromagnetic radiation.
8. Should not be placed above the computer tower.
9. Should not be placed directly on a carpeted floor.

How does carpet create an EMI, or for that matter any of them really effect speed of my connection.

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