Rice didn't say the administration leaked Khan's name, she said they confirmed it after it was printed, but they did it on background which means it's supposed to be treated as off the record.
Thanks for clearing that up about Rice -- big difference from what was originally stated on this thread.
That's not what background means. Information given "on background" is expected to be made public without the source being explicitly named. Giving information on background is typically how administrations leak information they want leaked.