Greg
http://www.newscientist.com/ns/980530/nlamppost.html
The light programme By Mark Ward
ultrafast internet access via the electricity
mains...it sounded too good to be true, and
perhaps it was. Trials of the scheme in
Manchester have hit an embarrassing snag.
Streetlamps using the same power supply as Net surfers are
acting as aerials and broadcasting downloaded data as
high-frequency radio waves.