Ticket #26184: 26184.patch

src/wp-admin/includes/dashboard.php

@@ -43 +43 @@
                 wp_add_dashboard_widget( 'network_dashboard_right_now', __( 'Right Now' ), 'wp_network_dashboard_right_now' );
 
         // Activity Widget
-        wp_add_dashboard_widget( 'dashboard_activity', __( 'Activity' ), 'wp_dashboard_activity' );
+        if ( is_blog_admin() )
+                wp_add_dashboard_widget( 'dashboard_activity', __( 'Activity' ), 'wp_dashboard_activity' );
 
         // QuickPress Widget
         if ( is_blog_admin() && current_user_can( 'edit_posts' ) )