Index: uc_authorizenet/uc_authorizenet.module
===================================================================
--- uc_authorizenet/uc_authorizenet.module	(date 1321006603000)
+++ uc_authorizenet/uc_authorizenet.module	(revision )
@@ -246,6 +246,7 @@
 function uc_authorizenet_charge($order_id, $amount, $data) {
   // Load the order.
   $order = uc_order_load($order_id);
+  $amount = round($amount, variable_get('uc_currency_prec', 2));
 
   // Perform the appropriate action based on the transaction type.
   switch ($data['txn_type']) {