The federal insurance marketplace was down again Wednesday because of a server problem with an outside vendor, government officials said. The data hub, or the application used to bring together several government agencies to determine a person's eligibility, was up and available again as of about 5 a.m., said Julie Bataille, director of the Office of Communications for the Centers for Medicare and Medicaid Services. "It is supporting the state marketplaces," Bataille said, although traffic through the server was moving slowly. "The impact we are still seeing is within the federal marketplace application."