My problem is: Many times my bookmark subfolders just disappear. If I do a search for a link in any of the lost folders at the top, find the link and select "open folder", the lost folders re-appear. I imagine the folders are linked lists. I wonder if the brower refresh or not refreshing is the issue. A display problem. Since they reappear, they are still there in memory. I doubt if they been written to the harddrive. It is very frustrating. As I've read many others having similar issues, I think it merits attention. Let them know to search for the link and open it in it's folder to reestablish the display. This IS NOT THE ANSWER ... but it is a work around. I've systematically tried to troubleshoot it, but have found no clue for predicting when it will happen. I was a programmer/analyst for decades. I imagine trying to keep firefox working is a real challenge. Thanks Greg