jimmybackman: Matter is simple, the people hate you, but the game does not see fit to explain WHY your stability goes down, and the thing that ups the stability again costs a fortune for some reason(1000 BP) when it should be like 100.... I know there are guides on how to manage your kingdom but that again is proof that the system sucks if you can only do it one way by keeping all stats fairly balanced and high, I mean real life countries are good at different things right? Why should you not be able to play a country that is mainly good at military and espionage for example while the other stats are not as good?
The game does not tell you. But you have eyes and memory. (At least you should have).
when checking the events outcome, you can see the unrest level on top of the monitor. if there is an event, which takes it down, then you have an unrest level lower.
But i must admit, the game itsself solved the unrest topic quite bad. if you check the pathfinder rule books, then you will find out, that in the real rolegame, you can for example build stuff, which gets your unrest level down. or make events. or whatever. in this game its an spiral downwards to an failed kingdom.
In my case i just edit the save game. its in the appdata file. open the save file with 7zip. open "player". search for unrest (2 times). change it to "Metastable". And everybody is happy again.
Edit: and what you mean, is not stability. its unrest. stability is one of the advisor areas, which you can see in numbers.