[Thierry]

Thanks for your insights.

I never got those during turn calculation. Always when going from one screen to the other.

Generally from clicking on the turn summary screen.

what buggers me is that if I have a real RAM issue, my whole PC is unsafe. Still I only got problems with Dom3. That's weird !

I'll try a reinstall of Dom3 that's certainly an excellent idea.

I check my RAM through the bios boot menu : no failure... Except for DOM3, my VISTA is quite stable. I never experienced something strange (for VISTA !) with it.