diff --git a/cake/libs/model/datasources/dbo_source.php b/cake/libs/model/datasources/dbo_source.php
index 69945aeaf..db5dca354 100755
--- a/cake/libs/model/datasources/dbo_source.php
+++ b/cake/libs/model/datasources/dbo_source.php
@@ -924,6 +924,7 @@ class DboSource extends DataSource {
 				}
 
 				if (!empty($ins)) {
+					$ins = array_unique($ins);
 					$fetch = $this->fetchAssociated($model, $query, $ins);
 				}
 
@@ -955,10 +956,10 @@ class DboSource extends DataSource {
 					}
 				}
 				if (!empty($ins)) {
+					$ins = array_unique($ins);
 					if (count($ins) > 1) {
 						$query = str_replace('{$__cakeID__$}', '(' .implode(', ', $ins) .')', $query);
 						$query = str_replace('= (', 'IN (', $query);
-						$query = str_replace('= (', 'IN (', $query);
 					} else {
 						$query = str_replace('{$__cakeID__$}',$ins[0], $query);
 					}
@@ -1060,7 +1061,6 @@ class DboSource extends DataSource {
 		$query = str_replace('{$__cakeID__$}', implode(', ', $ids), $query);
 		if (count($ids) > 1) {
 			$query = str_replace('= (', 'IN (', $query);
-			$query = str_replace('= (', 'IN (', $query);
 		}
 		return $this->fetchAll($query, $model->cacheQueries, $model->alias);
 	}
@@ -2179,7 +2179,7 @@ class DboSource extends DataSource {
 					}
 				} elseif (is_array($value) && !empty($value) && !$valueInsert) {
 					$keys = array_keys($value);
-					if (array_keys($value) === array_values(array_keys($value))) {
+					if ($keys === array_values($keys)) {
 						$count = count($value);
 						if ($count === 1) {
 							$data = $this->__quoteFields($key) . ' = (';