Index: src/wp-includes/formatting.php
===================================================================
--- src/wp-includes/formatting.php	(revision 32482)
+++ src/wp-includes/formatting.php	(working copy)
@@ -1471,20 +1471,14 @@
 	'Ÿ' => 'Ÿ'
 	);
 
-	// Remove metadata tags
-	$content = preg_replace('/<title>(.+?)<\/title>/','',$content);
-	$content = preg_replace('/<category>(.+?)<\/category>/','',$content);
-
 	// Converts lone & characters into &#38; (a.k.a. &amp;)
 	$content = preg_replace('/&([^#])(?![a-z1-4]{1,8};)/i', '&#038;$1', $content);
 
-	// Fix Word pasting
-	$content = strtr($content, $wp_htmltranswinuni);
+	// Fix Word pasting. TODO: still needed?
+	if ( strpos( $content, '&#1' ) !== false ) {
+		$content = strtr( $content, $wp_htmltranswinuni );
+	}
 
-	// Just a little XHTML help
-	$content = str_replace('<br>', '<br />', $content);
-	$content = str_replace('<hr>', '<hr />', $content);
-
 	return $content;
 }