Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revision 7840)
+++ wp-includes/functions.php	(working copy)
@@ -510,6 +510,12 @@
 	debug_fwrite( $log, 'Post contents:' );
 	debug_fwrite( $log, $content . "\n" );
 
+	foreach ( $pung as $link_test ) {
+		if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post
+			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $link_test . '%') );
+		}
+	}
+	
 	foreach ( $post_links_temp[0] as $link_test ) {
 		if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
 			$test = parse_url( $link_test );