The US Department of Justice may have only reached settlements with three of the five major publishers it had sued for allegedly fixing e-book prices, but it's improving its track record through a new deal with Penguin. Like its peers, the firm has agreed to end any pacts that prevent it from lowering e-book prices, whether the arrangements are with Apple or any other store operator. While Penguin hasn't immediately commented on its change of heart, a company spokesperson made clear to The Guar