I've read several posts on similar problems. I first experienced the freeze-up when trying to download files. So, I tried to go into tools/options as instructed to change download location. I then got the same freeze up at that point (when I clicked on "options") and had to end FF using task manager. I tried Safe Mode with add-on's disabled, and then I tried re-installing FF, same result each time. There must be some corrupt dll or ini or similar file in my profile somewhere that is causing this, and I don't want to start over with a new profile, obviously. Any help appreciated