For the benefit of anyone still waiting on this from Amazon who hasn't yet contacted them, when Amazon replied to my e-mail they informed me that my order had not yet shipped "due to system error" and that their tech specialists are working to fix the problem so my order can ship.
Now it's possible they're trying to feed me a load of technobabble in hopes of placating me, but it's also possible with this product that people who don't send them a friendly reminder don't get their orders shipped.
In any event my shipping was upgraded from Super Saver to One Day, and my shipping estimate now reads "September 7, 2004 to November 1, 2004" with a delivery estimate of "September 9, 2004 to November 2, 2004".