In all honesty, the patch doesn't appear to have a lot of complaints because of instability. And the devs have been testing the game, and we've been beta'ing it, on both 32-bit and 64-bit WinXP and Win7 systems, with a lot and little RAM, for several months. This isn't to make light of your complaint, but you might want to focus just on that, without making other assumptions.
Thanks for the info Glazunov. As is mentioned, it was just a suspicion. In a related thread, it was mentioned that using a previously saved 'custom faction' might be causing some instability. I, also, was using a custom faction (along with the mappack) so I'm going to try to reinstall the game and recreate my custom faction from inside 1.1.
The testing you describe seems just fine, and I am happy to put that suspicion to rest. I am currently using a 32-bit operating system, but have a 64-bit CPU and lots of RAM.
One interesting crash I had was when I tried to generate a new set-up with Ctrl-N. After I had done it about 10 times, I got the FE 'white screen of death.' Don't know if this would have anything to do with a custom faction - but I'll reinstall and hope for the best.