I would like to be as optimistic. I do find it interesting, however, that there are reports of last-minute interviewing of Plame's neighbors. I heard her old CIA boss interviewed some time ago and he said her CIA association was well known by some of her neighbors and that in turn was known by the CIA. He thought this was a political witch hunt and nothing more.
There seem to be conflicting reports as to whether or not the neighbors knew she was CIA......still it seems rather strange that the FBI would be doing these last minute surprise interviews.