I was battling many force close and "This Program Has Stopped Wrking" messages after the last big update. I had changed video card drivers and in-game settings and tried everything i could think of. As a last ditch effort, I disabled my CPU Overclock (seen in my sig below) and just let the chip do its thing at stock.
Since then, no crashes at all. No crowded fate crashes, no town crashes nothing, no hard freezes, no nothing.
I do not experience these issues with other programs on my system when it is overclocked (auto-adjusted with the MB, i don't touch anything else, sits at 4.2, not a crazy OC for an i5-3570k.)
So, if you haven't tried it, give it a shot and report back. Perhaps if we can identify that the game doesn't like overclocked CPUs, it may help the devs with a cause of the issue