Lock up issue

[Fingy]

Every time I capture Eburacum (in northern Briton) my game locks up and I have to reboot my computer! Whats going on? Everything was running perfectly from the start of the game up to about 440 AD. And it's not a CTD, the game freezes.

[Razor]

Does the game only freeze when you capture Eboracum? And does the next turn happen to be the winterseason?
I've had similar frustrations, only to find out it had something to do with the descr_harvests.txt and/or the descr_strat when characters are aging (children become named characters). I even became sooo frustrated I decided to remove a whole faction temporarily.
Which faction icon is displayed at the top of your screen when the game freezes?
Oh, is the sound normal?
I have the feeling since you can play all the way up to 440 that it has something to do with a scripted event á la bad harvests (descr_harvests.txt in the campaign folder) or some other event.