I've heard an unconfirmed rumor that AA rounds up 50 miles or points for determining if you have reached the nominal 25/50/100K. (This is not the full year-end review, where the leeway has historically been 500 miles/points for Gold, 1,000 for PLT/EXP.) Perhaps pentop could tell us if his/her Platinum status posts before his/her next flight does, so we can either confirm or discredit this.