Going to limit my comment, here, but from my recent experience it seems DD is getting a bit sloppy, lately.
Have had several recent orders appear as "In-Stock" in my cart, only to have them show as B.O. after I commit the purchase.
One title, then had it's "expected date" change (pushed back) 3 times.
Historically, they shipped "next day" on nearly all my orders.. lately it's 2-4 days before they "show" as shipped, and as often as not I get no e-mail "shipped" notice.
Used to be 3-4 days from "Shipped" to my mail box, now it seems to, more often, go closer to the outside limit.
I'm irked, at the moment, 'cause I had Pre-Ordered "Black Snake Moan", which no theater in my area showed (so I was really anticipating it's arrival), on HD-DVD and apparently they shipped the day after street-date... when it arrived yesterday afternoon, they had sent me the Standard DVD version, so now I'm back in the waiting mode!