Looks like Arnold Schwarzenegger and Maria Shriver just aren't ready to pull the trigger on those divorce papers yet, and it's not that they can't reach an agreement. Sources tell TMZ that both money and custody have already been worked out. So why the hesitancy? Either they have so much money it just doesn't matter, or they just can't seem to let go of each other yet. Together they're worth about 400 million dollars so it's not like either one is waiting for alimony or child support. Despite rumors that Arnold's been keeping company with new girlfriend Heather Milligan, he and Maria still looked awfully happy together last weekend at their daughter Christina's college graduation..