As the crash seems to have *something* to do with ~/.cache/xfce4/desktop /menu-cache--home-username-.config-xfce4-desktop-menu.xml.rc, i'll attach mine (as it was after the latest crash) just in case it's useful.
** Attachment added: "~/.cache/xfce4/desktop/menu-cache--home-ion-.config-xfce4-desktop-menu.xml.rc" http://librarian.launchpad.net/6857781/menu-cache--home-ion-.config-xfce4-desktop-menu.xml.rc -- [apport] xfce4-menu-plugin crashed with SIGSEGV https://launchpad.net/bugs/92911 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs