Playing Checkers With Domino

What's going on with Domino's release date? If I recall, it was originally scheduled for an August berth before being placed head-to-bald head with V for Vendetta on November 4. I blinked, and suddenly, according to Box Office Mojo, it's had three more release dates in the last month (Nov. 23, Aug. 19 and now tentatively Oct. 14). Does this have something to do with the real-life heroine's untimely end or perhaps wildly different test audience reactions ("They love it... move it up!" "They hate it... delay the sucker!") or is it merely motivated by changes in Pirates of the Carribean 2/3's production schedule? The world may never know...