Went to a URL to download some data, and FF required me to go thru several panes of warnings and I had to allow some sort of "exception" and I didn't notice the little box saying to make it just one time (which should be the DEFAULT) so how do I find & undo this permanent exception to something? I can't find ANYTHING in Preferences that seems to apply. And even if it was one of the Prefs thingies -- there is no way to Sort them by "newest created/loaded" and of course I have no idea what gobblygook name this exception might have, so I have no other way of identifying it even if I new which Prefs item it was stored within.