Playing a Russian campaign(lite mod), everything was going normally. I was at war with Poland & hungary when I got the successful crusade message come up, the Polish had taken Jerusalem. Next turn the usual happens Poland gets peace with Egypt. I noticed that the Polish AI had stopped sending armies at me & over the course of about 10 turns I took all their provinces except Krakow. Krakow had 2 full stacks near it that didn't move at all. Meanwhile they lost Jerusalem to rebels(probably the fact they weren't even garrissoning it & it had 40% hersey). So the Polish army begins marching back from the holy lands 1 full stack & 2 bits of stacks. Their army in europe didn't do anything, I also noticed that they weren't using their spy's or priests either.
Some turns later I was at war with the HRE & the same thing happened, they had a successful crusade to Toulouse & then just stopped doing anything. The funny thing was when they lost Toulouse to the spainish all their priests jumped out of their cities. I see from time to time ships sitting in the one place for many turns & they always have diplomats onboard. So is anyone else experiencing a slumbering AI?