This sounds like the same problem I am having. Though I do not think it happens all the time... I go to a Bookmarks Folder and click "Open in All in Tabs", and it crashes. Report attached.
** Attachment added: "crash report" http://librarian.launchpad.net/5063165/_usr_lib_firefox_firefox-bin.1t3M6z.crash -- Crash when cliicking on opening all bookmarks simultaneously https://launchpad.net/bugs/70288 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
