Is it uploading that is the problem or downloading too? Most P2P sites operate by uploading parts of the file as you are downloading it. Is DVR making an illegal copy of a copyrighted program? If technically that is the case, then the same cable companies that are assisting in catching illegal downloaders, are also assisting in illegal copying by renting the DVR equipment.
I am just curious where the line is drawn.
“I am just curious where the line is drawn.”
The devil is in those sorts of details.
The question of DVR recording was settled long ago — when courts and regulators ruled that making VCR recordings of TV shows was legal. Here (in Canada) it is also legal to copy a CD to any other media (e.g. an iPod), for your personal use. Making a backup copy is also legal — you just have to retain possession of the original CD. Making copies for distribution to others (including by means of a pirate web site) remains illegal. I don’t know how U.S. law compares on that point.
AFAIK, both the downloading and uploading of pirated music is illegal — but, enforcement is concentrated on the uploading. The uploader enables all the downloaders.