According to Cary's PDF, your number is the last reported number as well, which was from 12/12/10.
Between 2/1/09 (sold 9000 copies) to that date, it has sold 303000 copies. That is around 100 weeks. The average would be around 3030 copies. I'd give a guess thinking that "Just A Dream" might be selling around 1000-2000 copies weekly right now, and there had been many weeks passed since December, so it should be pretty darn close to 1 million copies. But it hasn't been certified Platinum yet so I'm guessing it's just not there yet. Of course her label might be slow.
I heard that Brian no longer takes sales request. Maybe someone could send an email to Carrie's label asking them to certify JAD Platinum and see what they reply?