Index: src/wp-admin/includes/dashboard.php
===================================================================
--- src/wp-admin/includes/dashboard.php	(revision 26862)
+++ src/wp-admin/includes/dashboard.php	(working copy)
@@ -585,7 +585,9 @@
 		echo '<div id="' . $args['id'] . '" class="activity-block">';
 
 		if ( $posts->post_count > $args['display'] ) {
-			echo '<small class="show-more hide-if-no-js"><a href="#">' . sprintf( __( 'See %s more&hellip;'), $posts->post_count - intval( $args['display'] ) ) . '</a></small>';
+			$count = $posts->post_count - intval( $args['display'] );
+			$text = sprintf( _n( 'See %s more&hellip;', 'See %s more&hellip;', $count ), $count );
+			echo '<small class="show-more hide-if-no-js"><a href="#">' . $text . '</a></small>';
 		}
 
 		echo '<h4>' . $args['title'] . '</h4>';