The public editor of the Times, Byron Calame, has made up his mind: Miller is bad news, and "the problems facing her inside and outside the newsroom will make it difficult for her to return to the paper as a reporter."
From Calame's column:
The Times needs to review Ms. Miller's journalistic practices as soon as possible, especially because she disputes some accounts of her conduct that have come to light since the leak investigation began. Since Ms. Miller did the Plame-leak reporting, the paper has made a significant effort to be as upfront as possible with readers about anonymous sources. An update of the rules for the granting of anonymity in The Times's ethics guidelines by Allan M. Siegal, the standards editor, may also be a good idea.