Not to me. Remember, this is a game that's coming out several years after Fallout 3, thus they had all those extra years to work out the original's kinks.
Of course, while building a game of this size there's bound to be new kinks introduced into the mix..
Several years? It's been ca. 2 years. And the project was still in pre-production in february 2009.
I think they had enough to do putting all the content in.