Sunshine's Release Date Troubles

Excited to see Danny Boyle's Sunshine? (The new trailer hit the web yesterday, see it here) Well it looks like you're going to have to wait a little longer.

The movie has been in the works for what seems like forever. Filming wrapped in Fall of 2005. And post production took over a year, pushing back the original October 13 2006 release date. A March 2007 release was announced, but the film was pulled from the slate yet again. Now we're hearing that the movie will hit theaters in late 2007, almost two years after the film wrapped production.

It makes me wonder what could possibly be wrong. Our sources say that the film was pushed back because the first cut didn't meet expectations. We're not saying the movie sucks. The trailer looks very promising, but a movie doesn't get bumbed back three times for no reason. Anyone know the full truth?