And the second time I have expunged its inadequate ass.
Because I am now cranky, here's the way to fix it if it should (equally mysteriously) happen to you. (You just go into your Firefox config file and change a setting, but it helps to know which setting to change.) No, I have no idea where the setting change came from. No, I would not reccommend using Ask.com's deinstall tool, as I didn't use their install tool to begin with. I'm sure not inviting the vampire program into my house.