That is correct. That top box is the one. I uncheck it, close preferences, and when I open up preferences again, the box is still checked. Is there something I am missing? Is there another step to save the change?
I tried it on three machines (Vista 32 bit, Vista 64 bit and Win7 64 bit)
In all three cases, it unchecked and stayed unchecked.
Have you thought about uninstalling and reinstalling?
I think you may be right. My trust manager settings screen does not have the OK and Cancel buttons on the bottom. I guess that indicates something is seriously wrong.