Here is the Firefox crash report generated then. (The system update was just to the `info` program, which I wasn't even using at the time)
** Attachment added: "firefox crash log" http://librarian.launchpad.net/5026575/_usr_lib_firefox_firefox-bin.1000.crash -- "xfdesktop" supposedly crashed https://launchpad.net/bugs/69264 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs