(gnome-settings-daemon:1447): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed
(polkit-gnome-authentication-agent-1:1482): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(polkit-gnome-authentication-agent-1:1482): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(polkit-gnome-authentication-agent-1:1482): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(polkit-gnome-authentication-agent-1:1482): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(canberra-gtk-play:1537): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(canberra-gtk-play:1537): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(canberra-gtk-play:1537): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(canberra-gtk-play:1537): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(unity-window-decorator:1581): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(unity-window-decorator:1581): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(unity-window-decorator:1581): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(unity-window-decorator:1581): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(thunderbird-bin:1712): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(thunderbird-bin:1712): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(thunderbird-bin:1712): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(thunderbird-bin:1712): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(applet.py:1748): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(applet.py:1748): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(applet.py:1748): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(applet.py:1748): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gwibber-service:1747): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gwibber-service:1747): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gwibber-service:1747): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gwibber-service:1747): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(ubuntuone-launch:1752): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(ubuntuone-launch:1752): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(ubuntuone-launch:1752): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(ubuntuone-launch:1752): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gwibber-service:1747): libindicate-WARNING **: Menu being changed when the indicator is visible.  Listeners will NOT be notified of this change.
(firefox:1869): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(firefox:1869): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(firefox:1869): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(firefox:1869): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",