Is there is a way to disable the undo save\load state?

[vsub]

I often create save states and a lot more often load states.
The feature undo load state is constantly creating new save state every time I load a save state(40mb)and till now(since I started the game)I have 9.5gb writing to the hdd mostly from the "undo load state" feature(lastState.sav)

And as a little offtopic,the current ram usage is 3.3gb...is that normal for a lot of hours of gameplay
I'm using 4.0-5410