Little more detail about my experience with above problem of losing Bookmark folders. If I click on Bookmarks at top left of screen (next to History, Tools, etc.) , then click "Organize," I can find all of my bookmarks within folders. But, there are duplicate entries, plus some empty folders. When I click twice on the bookmark star next to the URL of site I want to bookmark, these same folders/bookmarks are not visible or accessible. I've tried several fixes, as advised online, such as going into my "profile" but these suggestions do not address the problem of not being able to bookmark using the Star feature. In addition, with some suggestions one is warned that current bookmarks will be lost if previous are renewed. My work-around is to click "Star" then place new bookmark in the uncategorized folder, then periodically organize them by opening the "Recently Bookmarked" folder and moving them manually to appropriate folders. Ridiculous. I wouldn't have written so much, but trying desperately to get an answer. Any help will be appreciated, Thanks, Leilani

Try http://kb.mozillazine.org/Locked_or_damaged_places.sqlite