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(process:1144): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-button-images after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-label-select-on-focus after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-can-change-accels after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-menu-popup-delay after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-menu-popdown-delay after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-menu-bar-popup-delay after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-entry-select-on-focus after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-entry-password-hint-timeout after class was initialised

(firefox:1144): GLib-GObject-WARNING **: Attempt to add property GtkSettings::gtk-menu-images after class was initialised