I love the 'pin tab' feature and use it heavily. Every now and then my window gets closed and all my pinned tabs are gone. Not sure why it closes but I do not do it intentionally. I am on Macbook Pro - keep the OS and Firefox versions current - this has happened over several version of OS and Firefox. How can I recover the pinned settings easily - currently I bookmark them all and then have to open and pin them again. A real pain in the ass, especially when it seems to happen once a week. Hope you have a solution. Thx, rich