According to the New York Post, disagreements regarding the financial terms of the divorce settlement may be to blame for the hold-up.
"Two And A Half Men" star Kutcher was the highest-paid actor on TV last year, raking in some $24 million -- considerably more than Moore. However, he reportedly does not want to give his estranged wife a big pay-out in the divorce settlement. Sources told the New York Post that the couple's lawyers are trying to negotiate the settlement privately to avoid going before a judge in what would no doubt be a very public court dispute.
Moore announced her plans to divorce Kutcher in November 2011, after rumors circulated that he had a one-night stand with a 22-year-old woman in San Diego during the couple's sixth anniversary weekend.
If Kutcher is forced to fork over a large settlement, he certainly wouldn't be the first star to do so. Click through the slides below to see six other expensive splits.