Index: wp-includes/default-widgets.php
===================================================================
--- wp-includes/default-widgets.php	(revision 25008)
+++ wp-includes/default-widgets.php	(working copy)
@@ -574,7 +574,7 @@
 		<ul>
 		<?php while ( $r->have_posts() ) : $r->the_post(); ?>
 			<li>
-				<a href="<?php the_permalink() ?>" title="<?php echo esc_attr( get_the_title() ? get_the_title() : get_the_ID() ); ?>"><?php if ( get_the_title() ) the_title(); else the_ID(); ?></a>
+				<a href="<?php the_permalink() ?>"><?php if ( get_the_title() ) the_title(); else the_ID(); ?></a>
 			<?php if ( $show_date ) : ?>
 				<span class="post-date"><?php echo get_the_date(); ?></span>
 			<?php endif; ?>
Index: wp-includes/general-template.php
===================================================================
--- wp-includes/general-template.php	(revision 25008)
+++ wp-includes/general-template.php	(working copy)
@@ -1675,7 +1675,7 @@
 		$post = get_post( $id );
 
 		if ( comments_open() || pings_open() || $post->comment_count > 0 ) {
-			$title = sprintf( $args['singletitle'], get_bloginfo('name'), $args['separator'], esc_html( get_the_title() ) );
+			$title = sprintf( $args['singletitle'], get_bloginfo('name'), $args['separator'], the_title_attribute( 'echo=0' ) );
 			$href = get_post_comments_feed_link( $post->ID );
 		}
 	} elseif ( is_category() ) {