Cause alot of peeps are at work or just haven't logged in yet although they technically can for whatever reason. Relax, and accept that it's gooing be slow.
Personally, I would have loved to get in today, but based off what I've seen so far, since I ordered September 2nd, I figure at best I'm looking at Thursday/Friday at the current rate of let ins, and it's also going to be a packed house. Lol. Sure I'm a little disapointed, but there's no changing it, so complaining won't help.