The popular science fiction and fantasy podcast at the Dragon Page has produced a nice interview with famous fantasy writer George R.R. Martin. Even he admits that he has taken far too long writing A Dance With Dragons, but he insists that he is making good progress. Of course he cannot commit to a finish date. That's OK. I'll be here to read when its published.
George R.R. Martin explains that he simply is not a writer who can write good stories at a rapid pace. Amen to that. I can totally relate.
He does address head-on that some fans are unhappy with the lateness of A Dance With Dragons.
List to George R.R. Martin interview