<p>If CBS CEO Leslie Moonves had hoped the investigation by an independent panel into the network's botched "60 Minutes Wednesday" feature regarding President Bush's National Guard duty would be enough to put the controversy behind the media giant, recent days have brought him unsettling developments. Five weeks after the panel issued its 224-page report; those it singled out for wrongdoing are fighting back -- taking issue with the investigation as well as the Viacom-owned network. The new rumblings suggest that the sour taste of CBS's National Guard story may linger for months to come. And it will almost certainly remain beyond the network's planned farewell next month for longtime anchor Dan Rather, who was the on-camera reporter for the story.</p>