Vuze Inc., a California-based company that provides a popular file-sharing program, is giving its users a tool to help figure out if their Internet service provider is interfering with their traffic. The Associated Press last year confirmed user reports that Comcast Corp., the country's largest cable company, was secretly disrupting some file-sharing by its subscribers. The "plug-in" Vuze made available as a free download last weekend looks for "reset packets," the tool Comcast uses to break off some connections with computers trying to download files from Comcast subscribers, Vuze said Wednesday. (AP)