I really hate to bring this up, but I don't want us to get caught by surprise.
The Dwarfs are doing well, holding on to 2nd place. They don't have any bad race to fight in the top 5 right now, the highest ranking evil army is at 6th place (I think it's Vampires?). Thus far the Dwarfs have had grudge weeks to target high ranking enemies and bring them down some. So far this has been focused upon orcs and Dark Elves.
They won't go after any good race in fluff, but they will target Bretonnians, Wood Elves, and us in games to bring our scores down. They have also committed to not attack any of their allies, yet. There is some inference that if it comes to it they may break their alliance. But that has not yet happened.
They also captured the Tower of Moonrise (in the US) and will not let any of our troops in. This is the only major bit in the fluff where we're at odds. There have been mentions of newly established fortifications and messengers telling the Dwarfs not to get too comfortable, though.
Be aware of this my friends! I do not want a fight with our old allies, but they will stop at nothing to get the crown!