 It voted 3-to-2 to uphold a complaint against Comcast ruling that it had illegally inhibited users of its high-speed Internet service from using file-sharing software because it throttled the bandwidth available to certain customers for video files to ensure that other customers had adequate bandwidth.The FCC imposed no fine, but required Comcast to end such blocking in the year 2008, ordered Comcast to disclose the details of its network management practices within 30 days, submit a compliance plan for ending the offending practices by the end of the year, and disclose to the public the details of intended future practices.Then-FCC chairman Kevin J. Martin said the order was meant to set a precedent, that Internet providers and all communications companies could not prevent customers from using their networks the way they see fit, unless there is a good reason.