Simultaneous movement game weirdness?

I'm playing my first full game, with patch 1.08 installed and in simultaneous-movement mode. Two weird things are happening:

1) I can't change my intelligence allocations. I modify my choices, but after turn processing they're back to where they were before the changes. This is pretty crippling.

2) Every few dozen turns the game locks up during turn processing. Killing the process and restarting with the last saved turn usually works.

Anybody else seeing these problems with a simultaneous-movement, one human player game?