Index: units/helpers/rating_helper.php
===================================================================
--- units/helpers/rating_helper.php	(revision 13152)
+++ units/helpers/rating_helper.php	(working copy)
@@ -61,7 +61,7 @@
 
 			$config_mapping = $this->Application->getUnitOption($object->Prefix, 'ConfigMapping');
 			$review_settings = $config_mapping['RatingDelayValue'].':'.$config_mapping['RatingDelayInterval'];
-			$spam_helper->InitHelper($object->GetDBField('ResourceId'), 'Rating', $review_settings);
+			$spam_helper->InitHelper($object->GetDBField('ResourceId'), 'Rating', $review_settings, $object->GetCol('ResourceId'));
 
 			$user_voted = $spam_helper->InSpamControl();
 
@@ -121,7 +121,7 @@
 
 			$config_mapping = $this->Application->getUnitOption($object->Prefix, 'ConfigMapping');
 			$review_settings = $config_mapping['RatingDelayValue'].':'.$config_mapping['RatingDelayInterval'];
-			$spam_helper->InitHelper($object->GetDBField('ResourceId'), 'Rating', $review_settings);
+			$spam_helper->InitHelper($object->GetDBField('ResourceId'), 'Rating', $review_settings, $object->GetCol('ResourceId'));
 
 			if (!$object->isLoaded() || $spam_helper->InSpamControl()) {
 				return '@err:' . $this->_replaceInPhrase('already_voted');
Index: units/helpers/spam_helper.php
===================================================================
--- units/helpers/spam_helper.php	(revision 13152)
+++ units/helpers/spam_helper.php	(working copy)
@@ -31,6 +31,13 @@
 		var $ResourceId = 0;
 
 		/**
+		 * ResourceId from all items in list
+		 *
+		 * @var Array
+		 */
+		var $ListResourceIDs = Array ();
+
+		/**
 		 * Type of information to put into spam control
 		 *
 		 * @var string
@@ -44,6 +51,8 @@
 		 */
 		var $Expiration = 0;
 
+		var $ExpirationCache = Array ();
+
 		function SpamHelper()
 		{
 			parent::kHelper();
@@ -57,10 +66,11 @@
 		 * @param string $data_type
 		 * @param int $expiration
 		 */
-		function InitHelper($resource_id, $data_type, $expiration)
+		function InitHelper($resource_id, $data_type, $expiration, $list_resource_ids = Array ())
 		{
+			$this->DataType = $data_type;
 			$this->ResourceId = $resource_id;
-			$this->DataType = $data_type;
+			$this->ListResourceIDs = $list_resource_ids ? $list_resource_ids : Array ($resource_id);
 
 			if (preg_match('/(.*):(.*)/', $expiration, $regs)) {
 				$delay_value = $this->Application->ConfigValue($regs[1]);
@@ -87,22 +97,25 @@
 			}
 
 			$keys = Array (
-				'ItemResourceId'	=>	$this->ResourceId,
 				'IPaddress'			=>	$_SERVER['REMOTE_ADDR'],
 				'PortalUserId'		=>	$user_id,
 				'DataType'			=>	$this->DataType,
 			);
 
 			if ($as_array) {
+				$keys['ItemResourceId'] = $this->ResourceId;
+
 				return $keys;
 			}
 
 			$ret = '';
 			foreach ($keys as $field_name => $field_value) {
-				$ret .= '('.$field_name.' = '.$this->Conn->qstr($field_value).') AND ';
+				$ret .= '(' . $field_name . ' = ' . $this->Conn->qstr($field_value) . ') AND ';
 			}
 
-			return substr($ret, 0, -5);
+			$ret .= '(ItemResourceId IN (' . implode(',', $this->ListResourceIDs) . '))';
+
+			return $ret;
 		}
 
 		/**
@@ -115,6 +128,10 @@
 
 			$fields_hash['Expire'] = $this->Expiration;
 			$this->Conn->doInsert($fields_hash, $this->TableName);
+
+			if (!array_key_exists($this->DataType, $this->ExpirationCache)) {
+				$this->ExpirationCache[$this->DataType][$this->ResourceId] = $this->Expiration;
+			}
 		}
 
 		/**
@@ -124,13 +141,18 @@
 		 */
 		function InSpamControl()
 		{
-			$key_clause = $this->GetKeyClause();
+			if (!array_key_exists($this->DataType, $this->ExpirationCache)) {
+				$key_clause = $this->GetKeyClause();
 
-			$sql = 'SELECT Expire
-					FROM '.$this->TableName.'
-					WHERE '.$key_clause;
-			$expires = $this->Conn->GetOne($sql);
+				$sql = 'SELECT Expire, ItemResourceId
+						FROM '.$this->TableName.'
+						WHERE '.$key_clause;
+				$this->ExpirationCache[$this->DataType] = $this->Conn->GetCol($sql, 'ItemResourceId');
+			}
 
+			$cache =& $this->ExpirationCache[$this->DataType];
+			$expires = array_key_exists($this->ResourceId, $cache) ? $cache[$this->ResourceId] : false;
+
 			if ($expires && $expires < adodb_mktime()) {
 				// spam control record is expired
 				$sql = 'DELETE FROM '.$this->TableName.'
Index: units/reviews/reviews_tag_processor.php
===================================================================
--- units/reviews/reviews_tag_processor.php	(revision 13152)
+++ units/reviews/reviews_tag_processor.php	(working copy)
@@ -76,7 +76,7 @@
 		$spam_helper =& $this->Application->recallObject('SpamHelper');
 		/* @var $spam_helper SpamHelper */
 
-		$spam_helper->InitHelper($main_object->GetDBField('ResourceId'), 'Review', 0);
+		$spam_helper->InitHelper($main_object->GetDBField('ResourceId'), 'Review', 0, $main_object->GetCol('ResourceId'));
 
 		return $spam_helper->InSpamControl();
 	}