A divided FCC on Thursday grappled further with the thorny issue of how to relieve increasing online congestion, disagreeing sharply over whether government regulations are needed. The commission met at Stanford University during a seven-hour meeting delving into "net neutrality." It was the second such hearing the FCC has held this year, its interest on the subject piqued by formal complaints that Comcast is blocking certain of its customers who upload videos, music and other large data files from using its network during peak traffic times.