Sgb, rebelliousness doesn't take the house percentage into account (at least it's not supposed to). Were the rebelliousness values changing when you changed the house percentage, or was something else going on?
Kalador, if it crashes on next week every time with your autosave, then there is probably some event that is being triggered that week. Attach your autosave and we can try to duplicate the problem (I will anyway, when I get my desktop back up and running).