--- uc_cart.module      2009-09-29 19:20:45.000000000 -0500
+++ uc_cart.module      2009-09-30 01:14:19.000000000 -0500
@@ -1336,7 +1336,8 @@ function uc_cart_get_contents($cid = NUL

   if (!isset($items[$cid])) {
     $items[$cid] = array();
-    $result = db_query("SELECT c.*, n.title, n.vid FROM {node} n INNER JOIN {uc_cart_products} c ON n.nid = c.nid WHERE c.cart_id = '%s' ORDER BY c.cart_item_id", $cid);
+    $cart_order_preference = variable_get('uc_cart_contents_order_preference', '');
+    $result = db_query("SELECT c.*, n.title, n.vid FROM {node} n INNER JOIN {uc_cart_products} c ON n.nid = c.nid WHERE c.cart_id = '%s' %s", $cid, $cart_order_preference);

     while ($item = db_fetch_object($result)) {
       for ($i = 0; $i < count($items[$cid]); $i++) {

--- uc_cart.admin.inc       2009-09-23 10:45:56.000000000 -0500
+++ uc_cart.admin.inc       2009-09-30 01:16:10.000000000 -0500
@@ -209,7 +209,23 @@ function uc_cart_cart_settings_form() {
     '#size' => 32,
     '#field_prefix' => url(NULL, array('absolute' => TRUE)) . (variable_get('clean_url', 0) ? '' : '?q='),
   );
-
+  $form['contents_order_preference'] = array(
+    '#type' => 'fieldset',
+    '#title' => t('Cart contents sort order preference'),
+    '#description' => t('Select the preferred sort order for cart contents to be displayed.'),
+  );
+  $form['contents_order_preference']['uc_cart_contents_order_preference'] = array(
+    '#type' => 'radios',
+    '#title' => t('Sort order'),
+    '#options' => array(
+      '' => t('Unsorted'),
+      'ORDER BY cart_item_id ASC' => t('Oldest added items first'),
+      'ORDER BY cart_item_id DESC' => t('Newest added items first'),
+      'ORDER BY changed ASC' => t('Oldest added or changed items first'),
+      'ORDER BY changed DESC' => t('Newest added or changed items first'),
+    ),
+    '#default_value' => variable_get('uc_cart_contents_order_preference', ''),
+  );
   return system_settings_form($form);
 }