No, according to Vaughn, everybody at Marvel loved it. They just asked him to work the script so they can fit it within a 150-180 million budget. Just some tweaks needed, battle scenes trimmed down, nothing too drastic. Here's what he said for The Guardian:
"My phone has just rung. Marvel loves the script. The only problem is that it has been costed at $300m and they ask how I am going to reduce it by $150m. I think I prefer being asked what it's like working with De Niro."
Oh, here's the link:
http://www.guardian.co.uk/media/2007/oct/07/film.filmnews