diff --git a/src/IDF/Gconf.php b/src/IDF/Gconf.php
new file mode 100644
index 0000000..4bbec62
--- /dev/null
+++ b/src/IDF/Gconf.php
@@ -0,0 +1,179 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Configuration of the objects.
+ *
+ * It is just storing a list of key/value pairs associated to
+ * different objects. If you use this table for your model, do not
+ * forget to drop the corresponding keys in your preDelete call.
+ */
+class IDF_Gconf extends Pluf_Model
+{
+    public $_model = __CLASS__;
+    public $datacache = null;
+    public $dirty = array();
+    public $f = null;
+    protected $_mod = null;
+
+    function init()
+    {
+        $this->_a['table'] = 'idf_gconf';
+        $this->_a['model'] = __CLASS__;
+        $this->_a['cols'] = array(
+                             // It is mandatory to have an "id" column.
+                            'id' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Sequence',
+                                  //It is automatically added.
+                                  'blank' => true, 
+                                  ),
+                            'model_class' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Varchar',
+                                  'blank' => false,
+                                  'size' => 150,
+                                  'verbose' => __('model class'),
+                                  ),
+                            'model_id' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Integer',
+                                  'blank' => false,
+                                  'verbose' => __('model id'),
+                                  ),
+                            'vkey' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Varchar',
+                                  'blank' => false,
+                                  'size' => 50,
+                                  'verbose' => __('key'),
+                                  ),
+                            'vdesc' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Text',
+                                  'blank' => false,
+                                  'verbose' => __('value'),
+                                  ),
+                            );
+        $this->_a['idx'] = array('model_vkey_idx' =>
+                                 array(
+                                       'col' => 'model_class, model_id, vkey',
+                                       'type' => 'unique',
+                                       ),
+                                 );
+        $this->f = new IDF_Config_DataProxy($this);
+    }
+
+    function setModel($model)
+    {
+        $this->datacache = null;
+        $this->_mod = $model;
+    }
+
+    function initCache()
+    {
+        $this->datacache = array();
+        $this->dirty = array();
+        $sql = new Pluf_SQL('model_class=%s AND model_id=%s',
+                            array($this->_mod->_model, $this->_mod->id));
+        foreach ($this->getList(array('filter' => $sql->gen())) as $val) {
+            $this->datacache[$val->vkey] = $val->vdesc;
+            $this->dirty[$val->vkey] = $val->id;
+        }
+    }
+
+    /**
+     * FIXME: This is not efficient when setting a large number of
+     * values in a loop.
+     */
+    function setVal($key, $value)
+    {
+        if (!is_null($this->getVal($key, null)) 
+            and $value == $this->getVal($key)) {
+            return;
+        }
+        if (isset($this->dirty[$key])) {
+            // we get to check if deleted by other process + update
+            $conf = new IDF_Gconf($this->dirty[$key]);
+            if ($conf->id == $this->dirty[$key]) {
+                $conf->vdesc = $value;
+                $conf->update();
+                $this->datacache[$key] = $value;
+                return;
+            }
+        } 
+        // we insert
+        $conf = new IDF_Gconf();
+        $conf->model_class = $this->_mod->_model;
+        $conf->model_id = $this->_mod->id;
+        $conf->vkey = $key;
+        $conf->vdesc = $value;
+        $conf->create();
+        $this->datacache[$key] = $value;
+        $this->dirty[$key] = $conf->id;
+    }
+
+    function getVal($key, $default='')
+    {
+        if ($this->datacache === null) {
+            $this->initCache();
+        }
+        return (isset($this->datacache[$key])) ? $this->datacache[$key] : $default;
+    }
+
+    function delVal($key, $initcache=true)
+    {
+        $gconf = new IDF_Gconf();
+        $sql = new Pluf_SQL('vkey=%s AND model_class=%s AND model_id=%s', array($key, $this->_mod->_model, $this->_mod->id));
+        foreach ($gconf->getList(array('filter' => $sql->gen())) as $c) {
+            $c->delete();
+        }
+        if ($initcache) {
+            $this->initCache();
+        }
+    }
+
+    /**
+     * Drop the conf of a model.
+     *
+     * If your model is using this table, just add the following line
+     * in your preDelete() method:
+     *
+     * IDF_Gconf::dropForModel($this)
+     *
+     * It will take care of the cleaning.
+     */
+    static public function dropForModel($model)
+    {
+        $table = Pluf::factory(__CLASS__)->getSqlTable();
+        $sql = new Pluf_SQL('model_class=%s AND model_id=%s',
+                            array($model->_model, $model->id));
+        $db = &Pluf::db();
+        $db->execute('DELETE FROM '.$table.' WHERE '.$sql->gen());
+    }
+
+    static public function dropUser($signal, &$params)
+    {
+        self::dropForModel($params['user']);
+    }
+}
diff --git a/src/IDF/Migrations/15AddGconf.php b/src/IDF/Migrations/15AddGconf.php
new file mode 100644
index 0000000..d783259
--- /dev/null
+++ b/src/IDF/Migrations/15AddGconf.php
@@ -0,0 +1,53 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Add the new IDF_Gconf model.
+ *
+ */
+
+function IDF_Migrations_15AddGconf_up($params=null)
+{
+    $models = array(
+                    'IDF_Gconf',
+                    );
+    $db = Pluf::db();
+    $schema = new Pluf_DB_Schema($db);
+    foreach ($models as $model) {
+        $schema->model = new $model();
+        $schema->createTables();
+    }
+}
+
+function IDF_Migrations_15AddGconf_down($params=null)
+{
+    $models = array(
+                    'IDF_Gconf',
+                    );
+    $db = Pluf::db();
+    $schema = new Pluf_DB_Schema($db);
+    foreach ($models as $model) {
+        $schema->model = new $model();
+        $schema->dropTables();
+    }
+}
\ No newline at end of file
diff --git a/src/IDF/Migrations/Backup.php b/src/IDF/Migrations/Backup.php
index a90d433..f3db0ab 100644
--- a/src/IDF/Migrations/Backup.php
+++ b/src/IDF/Migrations/Backup.php
@@ -52,6 +52,7 @@ function IDF_Migrations_Backup_run($folder, $name=null)
                     'IDF_Key',
                     'IDF_Scm_Cache_Git',
                     'IDF_Queue',
+                    'IDF_Gconf',
                     );
     $db = Pluf::db();
     // Now, for each table, we dump the content in json, this is a
@@ -96,6 +97,7 @@ function IDF_Migrations_Backup_restore($folder, $name)
                     'IDF_Key',
                     'IDF_Scm_Cache_Git',
                     'IDF_Queue',
+                    'IDF_Gconf',
                     );
     $db = Pluf::db();
     $schema = new Pluf_DB_Schema($db);
diff --git a/src/IDF/Migrations/Install.php b/src/IDF/Migrations/Install.php
index a3d42dd..5d5a57c 100644
--- a/src/IDF/Migrations/Install.php
+++ b/src/IDF/Migrations/Install.php
@@ -49,6 +49,7 @@ function IDF_Migrations_Install_setup($params=null)
                     'IDF_Key',
                     'IDF_Scm_Cache_Git',
                     'IDF_Queue',
+                    'IDF_Gconf',
                     );
     $db = Pluf::db();
     $schema = new Pluf_DB_Schema($db);
@@ -86,6 +87,7 @@ function IDF_Migrations_Install_teardown($params=null)
     $perm = Pluf_Permission::getFromString('IDF.project-authorized-user');
     if ($perm) $perm->delete();
     $models = array(
+                    'IDF_Gconf',
                     'IDF_Queue',
                     'IDF_Scm_Cache_Git',
                     'IDF_Key',