diff --git a/.gitignore b/.gitignore
index 6e24876..38b4809 100755
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@
 old
 data/
 tmp/
+db_backups/*
+!db_backups/README
diff --git a/TODO b/TODO
index de907f1..96fce1f 100755
--- a/TODO
+++ b/TODO
@@ -1,5 +1,6 @@
 Issues :
 ========
+* Check CSRF everywhere ?
 
 Improvements :
 ==============
diff --git a/inc/GlobalPaybacks.class.php b/inc/GlobalPaybacks.class.php
index 00d05aa..011a0cd 100644
--- a/inc/GlobalPaybacks.class.php
+++ b/inc/GlobalPaybacks.class.php
@@ -39,7 +39,7 @@
         // Setters
         // =======
         public function setId($id) {
-            $this->users_in->setInvoiceId($id);
+            $this->users_in->setPaybackId($id);
             $this->id = (int) $id;
         }
 
diff --git a/inc/UsersInGlobalPayback.class.php b/inc/UsersInGlobalPayback.class.php
index 9c35374..f408269 100644
--- a/inc/UsersInGlobalPayback.class.php
+++ b/inc/UsersInGlobalPayback.class.php
@@ -6,12 +6,12 @@
         protected $payback_id = 0, $users_list;
         //users_list is a 2D array of users_id and amount between them
         //user1 owes amount to user2
-        protected $TABLE_NAME = "Users_in_GlobalPayback";
+        protected $TABLE_NAME = "Users_in_GlobalPaybacks";
         protected $fields = array(
             'global_payback_id'=>'int',
             'user1_id'=>'int',
             'user2_id'=>'int',
-            'amount'=>'float'
+            'amount'=>'int'
             );
 
         public function __construct() {
@@ -114,9 +114,9 @@
 
             foreach($this->users_list as $user1=>$temp) {
                 foreach($temp as $user2=>$amount) {
-                    $query->bindParam(':user1_id', intval($user1));
-                    $query->bindParam(':user2_id', intval($user2));
-                    $query->bindParam(':amount', floatval($amount));
+                    $query->bindValue(':user1_id', intval($user1));
+                    $query->bindValue(':user2_id', intval($user2));
+                    $query->bindValue(':amount', floatval($amount));
                     $query->execute();
                 }
             }
diff --git a/index.php b/index.php
index 8f105e7..2d66b9c 100644
--- a/index.php
+++ b/index.php
@@ -678,8 +678,11 @@
 
         case "manage_paybacks":
             if(empty($_GET['new'])) {
+                $global_paybacks = new GlobalPayback();
+                $global_paybacks = $global_paybacks->load();
+
                 $tpl->assign('list', true);
-                $tpl->assign('global_paybacks', array(array("id"=>1, "date"=>"now")));
+                $tpl->assign('global_paybacks', $global_paybacks);
             }
             else {
                 if(!empty($_POST['users_in'])) {
@@ -689,7 +692,7 @@
                     if(!is_dir('db_backups')) {
                         mkdir('db_backups');
                     }
-                    system("mysqldump -h ".MYSQL_HOST." -u ".MYSQL_LOGIN." -p ".MYSQL_PASSWORD." ".MYSQL_DB." > db_backup/".date('d-m-Y_H:i'));
+                    system("mysqldump -h ".MYSQL_HOST." -u ".MYSQL_LOGIN." -p ".MYSQL_PASSWORD." ".MYSQL_DB." > db_backups/".date('d-m-Y_H:i'));
 
                     $users_in = array();
                     foreach($_POST['users_in'] as $user1_id) {
@@ -704,7 +707,7 @@
                                     $users_in[$user1_id][$user2_id] = 0;
                                 }
                                 else {
-                                    $users_in[$user1_id][$user2_id] = -$users_in[$user1_id][$user2_id];
+                                    $users_in[$user1_id][$user2_id] = -$users_in[$user2_id][$user1_id];
                                     $users_in[$user2_id][$user1_id] = 0;
                                 }
                             }
@@ -763,6 +766,8 @@
                         }
                     }
 
+                    var_dump($users_in);
+
                     $global_payback->setUsersIn($users_in);
                     $global_payback->setDate(date('i'), date('G'), date('j'), date('n'), date('Y'));
                     $global_payback->save();
@@ -771,7 +776,7 @@
                     ($cached_files = glob(raintpl::$cache_dir."*.rtpl.php")) or ($cached_files = array());
                     array_map("unlink", $cached_files);
 
-                    header('location: index.php?do=edit_users&'.$get_redir);
+                    header('location: index.php?do=manage_paybacks&'.$get_redir);
                     exit();
                 }
                 
diff --git a/install.php b/install.php
index 712c76e..365a71d 100644
--- a/install.php
+++ b/install.php
@@ -39,6 +39,13 @@
 
             //Create table "Paybacks"
             $db->query('CREATE TABLE IF NOT EXISTS '.$mysql_prefix.'Paybacks (id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY, date DATETIME, invoice_id INT(11), KEY invoice_id (invoice_id), amount INT(11), from_user INT(11), to_user INT(11)) DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci');
+
+            // Create table "GlobalPaybacks"
+            $db->query('CREATE TABLE IF NOT EXISTS '.$mysql_prefix.'GlobalPaybacks (id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY, date DATETIME) DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci');
+
+            // Create table "Users_in_GlobalPaybacks"
+            $db->query('CREATE TABLE IF NOT EXISTS '.$mysql_prefix.'Users_in_GlobalPaybacks (global_payback_id INT(11) NOT NULL, KEY global_payback_id (global_payback_id), user1_id INT(11), user2_id INT(11), amount INT(11)) DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci');
+
         } catch (PDOException $e) {
             $error = 'Unable to connect to database and create database, check your credentials and config.<br/>Error message : '.$e->getMessage().'.';
         }
diff --git a/tpl/default_en/manage_paybacks.html b/tpl/default_en/manage_paybacks.html
index c57ad74..bd8360a 100644
--- a/tpl/default_en/manage_paybacks.html
+++ b/tpl/default_en/manage_paybacks.html
@@ -4,12 +4,12 @@
     <h2>Manage global paybacks</h2>
         <p class="center"><a href="?do=manage_paybacks&new=1">Add a new global payback</a></p>
 
-        {if condition="count($global_paybacks) > 0"}
+        {if condition="$global_paybacks !== FALSE"}
             <p>List of previous global paybacks :</p>
             <dl>
                 {loop="$global_paybacks"}
-                    <dt>{$value['date']}</dt>
-                    <dd><a href="?do=see_paybacks&id={$value['id']}">Payback n°{$value['id']}</a></dd>
+                    <dt>{$value->getDate()}</dt>
+                    <dd><a href="?do=see_paybacks&id={$value->getId()}">Payback n°{$value->getId()}</a></dd>
                 {/loop}
             </dl>
         {/if}
diff --git a/tpl/default_fr/manage_paybacks.html b/tpl/default_fr/manage_paybacks.html
index 7b1a096..d194180 100644
--- a/tpl/default_fr/manage_paybacks.html
+++ b/tpl/default_fr/manage_paybacks.html
@@ -4,12 +4,12 @@
     <h2>Gérer les remboursements globaux</h2>
         <p class="center"><a href="?do=manage_paybacks&new=1">Ajouter un remboursement global</a></p>
 
-        {if condition="count($global_paybacks) > 0"}
+        {if condition="$global_paybacks !== FALSE"}
             <p>Liste des remboursements globaux précédents :</p>
             <dl>
                 {loop="$global_paybacks"}
-                    <dt>{$value['date']}</dt>
-                    <dd><a href="?do=see_paybacks&id={$value['id']}">Remboursement n°{$value['id']}</a></dd>
+                <dt>{$value->getDate()}</dt>
+                <dd><a href="?do=see_paybacks&id={$value->getId()}">Remboursement n°{$value->getId()}</a></dd>
                 {/loop}
             </dl>
         {/if}