This is a new game started with the 1.3 Opt-In.  The only mods that I am using are those that give new races.  Sometime before turn 122, ships from three of my neighboring races decided to park themselves next to one of my planets.  Here is a screenshot at turn 122.

Later, I saw more ships heading towards the planet, so I put three of my ships in the three free spaces.  The new ships then parked themselves as close to the planet as possible.  Here is a screenshot at turn 161.

One of the neighbors is the Drengon Separtists.  I checked the Diplomacy Window to see how they felt about me.  They don't like me, but we are not at war.

I decided to see if I could cause trouble by getting them to declare war on one our neighbors.  When I checked possible candidates in the Trade Window, they seemed to be at war with everyone, even though it doesn't show in the Diplomacy Window.



I don't have a screenshot showing it, but sometimes a ship would follow one of my ships around until my ship would get too far away from it.  They seemed to prefer following unarmed ships.

There have been several posts about the AI not declaring war on the person playing the game.  The AI has not declared war on me in this game, but the actions of the ships make me think that the AI thinks it is at war with me.  I hope the saved games I submitted with Ticket #IXL-494-21942 will help reveal any flaw in the AI that could be causing this.