I don;t use XMarks but it keeps popping up. I've unchecked every box I can uncheck but it makes no difference. I want to get rid of it altogether, or if not then disable it so it quits popping up.
This will be listed in the Firefox add-ons manager, for details on removing it from there see https://support.mozilla.com/kb/Uninstalling+add-ons
Thank you! I didn't think to look there, but now you point it out it's obvious. Duh! :-)