Not entirely sure if this is strange or not. I've never seen it happen before anyway.
Prussia comes to the defence of Denmark when Austria tries to take Schleswig-Holstien at the start of the game
That's the AI being smart. Protect a weaker nation from their nemesis, thus preventing their nemesis from gaining additional land and allowing Prussia to take the land from the weaker nation, instead of having to fight Austria for it.
Not strange, but funny, and pathetic...
http://www.flickr.com/photos/75705911@N04/6926734872/in/photostream
The NGF forming that early is not good news for your Krakow.
But atleast France will start DOWing NGF now every 5 years.