I've heard a lot of good things about Firefox, so I thought I'd check it out. So far, so good. But if I open a new window and move it around, it often snaps to some invisible grid or to other browser windows already open. I can move it around and position it where I want, but if I get it too close to another open window it snaps to that position. I've looked, but I can't find a way to turn that off. Is it possible?