diff --git a/uc_cart/uc_cart.module b/uc_cart/uc_cart.module
index 523a6f1..50478c9 100644
--- a/uc_cart/uc_cart.module
+++ b/uc_cart/uc_cart.module
@@ -218,6 +218,13 @@ function uc_cart_cron() {
       uc_cart_empty($row->cart_id);
     }
   }
+
+  // Update status of abandoned orders.
+  $result = db_query("SELECT order_id FROM {uc_orders} WHERE order_status = :status AND modified < :time", 
+    array(':status' => 'in_checkout', ':time' => REQUEST_TIME - 600))->fetchCol();
+  foreach ($result as $order_id) {
+    uc_order_update_status($order_id, 'abandoned');
+  }
 }
 
 /**
diff --git a/uc_cart/uc_cart.pages.inc b/uc_cart/uc_cart.pages.inc
index f7b43f3..bd00f7d 100644
--- a/uc_cart/uc_cart.pages.inc
+++ b/uc_cart/uc_cart.pages.inc
@@ -114,6 +114,9 @@ function uc_cart_checkout_form($form, &$form_state) {
   // If there hasn't been activity on the checkout page for 20 minutes, clear
   // order details and prevent identity theft.
   if (!$order || uc_order_status_data($order->order_status, 'state') != 'in_checkout' || $order->modified < REQUEST_TIME - 600 || ($user->uid > 0 && $user->uid != $order->uid)) {
+    if ($order && $order->status == 'in_checkout' && $order->modified < REQUEST_TIME - 600) {
+      uc_order_update_status($order->order_id, 'abandoned');
+    }
     $order = uc_order_new($user->uid);
     $_SESSION['cart_order'] = $order->order_id;
   }
diff --git a/uc_order/uc_order.install b/uc_order/uc_order.install
index ce689c1..72f83e3 100644
--- a/uc_order/uc_order.install
+++ b/uc_order/uc_order.install
@@ -617,6 +617,13 @@ function uc_order_install() {
 
   $values = array(
     array(
+      'order_status_id' => 'abandoned',
+      'title' => $t('Abandoned'),
+      'state' => 'canceled',
+      'weight' => -30,
+      'locked' => 1,
+    ),
+    array(
       'order_status_id' => 'canceled',
       'title' => $t('Canceled'),
       'state' => 'canceled',
@@ -803,3 +810,18 @@ function uc_order_update_7004(&$sandbox) {
     $sandbox['#finished'] = 1;
   }
 }
+
+/**
+ * Add 'abandoned' order status.
+ */
+function uc_order_update_7004() {
+  db_merge('uc_order_statuses')
+    ->key(array('order_status_id' => 'abandoned'))
+    ->fields(array(
+      'title' => t('Abandoned'),
+      'state' => 'canceled',
+      'weight' => -30,
+      'locked' => 1,
+    ))
+    ->execute();
+}