Pac Bell's Internet arm sues music industry over file-sharer IDs:

Pacific Bell Internet Services jumped into the contentious music-downloading fray late Wednesday, filing a lawsuit against the recording industry and questioning the constitutionality of the industry's effort to track down online music sharers.

In a complaint filed with the U.S. District Court in San Francisco, Internet service provider PBIS, operated by San Antonio-based SBC, alleges that many of the subpoenas served against it by the Recording Industry Association of America were done so

(from Associated Press, via SFgate.com).