Index: wp-includes/comment.php
===================================================================
--- wp-includes/comment.php	(revision 11133)
+++ wp-includes/comment.php	(working copy)
@@ -367,6 +367,7 @@
  */
 function sanitize_comment_cookies() {
 	if ( isset($_COOKIE['comment_author_'.COOKIEHASH]) ) {
+		$_COOKIE['comment_author_raw_'.COOKIEHASH] = $_COOKIE['comment_author_'.COOKIEHASH];
 		$comment_author = apply_filters('pre_comment_author_name', $_COOKIE['comment_author_'.COOKIEHASH]);
 		$comment_author = stripslashes($comment_author);
 		$comment_author = attr($comment_author);
@@ -374,6 +375,7 @@
 	}
 
 	if ( isset($_COOKIE['comment_author_email_'.COOKIEHASH]) ) {
+		$_COOKIE['comment_author_email_raw_'.COOKIEHASH] = $_COOKIE['comment_author_email_'.COOKIEHASH];
 		$comment_author_email = apply_filters('pre_comment_author_email', $_COOKIE['comment_author_email_'.COOKIEHASH]);
 		$comment_author_email = stripslashes($comment_author_email);
 		$comment_author_email = attr($comment_author_email);
Index: wp-includes/comment-template.php
===================================================================
--- wp-includes/comment-template.php	(revision 11133)
+++ wp-includes/comment-template.php	(working copy)
@@ -824,7 +824,9 @@
 	} else if ( empty($comment_author) ) {
 		$comments = get_comments( array('post_id' => $post->ID, 'status' => 'approve', 'order' => 'ASC') );
 	} else {
-		$comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND ( comment_approved = '1' OR ( comment_author = %s AND comment_author_email = %s AND comment_approved = '0' ) ) ORDER BY comment_date_gmt", $post->ID, $comment_author, $comment_author_email));
+		$comment_author_sql = !empty($_COOKIE['comment_author_raw_'.COOKIEHASH]) ? stripslashes($_COOKIE['comment_author_raw_'.COOKIEHASH]) : $comment_author;
+		$comment_author_email_sql = !empty($_COOKIE['comment_author_email_raw_'.COOKIEHASH]) ? stripslashes($_COOKIE['comment_author_email_raw_'.COOKIEHASH]) : $comment_author_email;
+		$comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND ( comment_approved = '1' OR ( comment_author = %s AND comment_author_email = %s AND comment_approved = '0' ) ) ORDER BY comment_date_gmt", $post->ID, $comment_author_sql, $comment_author_email_sql));
 	}
 
 	// keep $comments for legacy's sake