Cheat!

[IrishMike]

What were you thinking moving that king away from the Sacred City of Constantinople? No No just kidding. Yes sometimes due to strange events like a crusade launched against me, or a invasion, I get what i call "Flash Rebelions". Almost all my provinces rebel and its only for one turn, the next turn their just fine and happy. Doesn't make sense, might be a glitch, but its way to late to fix it now. Oh well, good luck with the campain.

[Flarf]

Hi
One thing you could try is when you own a large amount of the world is let the AI control your taxes, unit and building production. This seams to solve the problem of provinces rebeling. One other is to let the AI auto assign titles because it chooses high accum generals which benfit the province they work in. Just as a side note I don't advise this early in the campaign as the AI is pretty out of it, but when all your concerned of is moving key armies to crush remaining factions it really frees up your time.