Index: functions.php
===================================================================
--- functions.php	(revision 12893)
+++ functions.php	(working copy)
@@ -1122,7 +1122,7 @@
 		if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post
 			$mid = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $link_test . '%') );
 			do_action( 'delete_postmeta', $mid );
-			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE post_id IN(%s)", implode( ',', $mid ) ) );
+			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN(%s)", implode( ',', $mid ) ) );
 			do_action( 'deleted_postmeta', $mid );
 		}
 	}