no choice for turn off the sync, and only when sign in and then automaticaly sync and must fast turn off the sync, i hope mozzila fix this, i hope mozzila can detect that already has the same bookmark on web browser also can replace the same bookmark rather than make it double and make me do double work for delete , also no need automaticaly add same bookmark everytime im sign in into mozzila and make it double bookmark, because my purpose for sign in is for sync the last history of password at my bookmark toolbar, but it seems it can't happend for only sync the last password that changed, everytime im sign in into mozzila web browser, the next day im automaticaly log out and neeed log in again, hope they fix this soon