Firefox crashes while trying to bookmark a page. In order to create a bookmark I have to open "Show All Bookmarks" then create a folder, with sub-folders, then "Bookmark This Page" if I try to "Bookmark This Page" create a new folder or sub-folder the bookmark library stops responding which in turn causes the entire browser to crash, I have two options to chose from, either wait until program responds, or quit program and then restart. I have never seen it start to respond, and I have waited for up to 30 minutes waiting. So I always end up quitting the program and then restarting Firefox. Most of the time it will restart with all tabs open prior to the crash, however if I try to do anything while the tabs are reloading it will crash all over, even if I try to bookmark a tab that has reloaded while the others are still loading. Some times I get the restore session option which allows me to pick and choose the pages I want to restore, but just as I have stated I can't do anything while the tabs reload other wise the browser crashes. I began having this problem 2 browser upgrades before my current version 44.0, I hope someone can help me with this issue as I do not care for any other browser available.