I sporadically get a pop-up that requests I download a critical update patch to firefox.... The file looks like it comes from http://xeideindiafirstlife.org/ and is is titled firefox-update.js. This looks shady, for Firefox never asks me to click a download link to install anything. Is this legitimate? Full file path (https://xeideindiafirstlife.org/3691136220415/1499367362585661/firefox-update.js)