When reproducing in Precise .xsession-errors says: Gtk-CRITICAL **: gtk_widget_get_clipboard: assertion `gtk_widget_has_screen (widget)' failed Gtk-CRITICAL **: gtk_clipboard_request_text: assertion `clipboard != NULL' failed Gtk-WARNING **: Inserting action group 'ClipboardActions' into UI manager which already has a group with this name Gtk-CRITICAL **: gtk_widget_get_clipboard: assertion `gtk_widget_has_screen (widget)' failed Gtk-CRITICAL **: gtk_clipboard_request_text: assertion `clipboard != NULL' failed Gtk-CRITICAL **: gtk_widget_get_clipboard: assertion `gtk_widget_has_screen (widget)' failed Gtk-CRITICAL **: gtk_clipboard_request_text: assertion `clipboard != NULL' failed WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2153 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2154 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2155 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2156 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2157 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2158 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2159 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2160 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2161 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2162 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2163 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Generating properties error for: 2164 WARN 2012-02-20 23:27:30 unity.libdbusmenu-glib :0 Error getting properties on a new menuitem: Error getting properties for ID Gtk-CRITICAL **: gtk_widget_get_clipboard: assertion `gtk_widget_has_screen (widget)' failed Gtk-CRITICAL **: gtk_clipboard_request_text: assertion `clipboard != NULL' failed Gtk-CRITICAL **: gtk_widget_get_clipboard: assertion `gtk_widget_has_screen (widget)' failed Gtk-CRITICAL **: gtk_clipboard_request_text: assertion `clipboard != NULL' failed