--- a/src/memory/memory.py	Fri May 23 09:59:15 2014 +0200
+++ b/src/memory/memory.py	Fri May 23 10:03:33 2014 +0200
@@ -180,7 +180,7 @@
     if os.path.isfile(os.path.expanduser(old_default) + '/' + C.SAVEFILE_DATABASE):
         if not silent:
             log.warning(_("A database has been found in the default local_dir for previous versions (< 0.5)"))
-        fixConfigOption('', 'local_dir', old_default)
+        fixConfigOption('', 'local_dir', old_default, silent)
 
 
 class Memory(object):

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tools/config.py	Fri May 23 10:03:33 2014 +0200
@@ -0,0 +1,64 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# SAT: a jabber client
+# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org)
+# Copyright (C) 2013, 2014 Adrien Cossa (souliane@mailoo.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program 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 Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" Configuration related useful methods """
+
+from sat.core.log import getLogger
+log = getLogger(__name__)
+
+from sat.core.constants import Const as C
+from sat.core.i18n import _
+
+from ConfigParser import SafeConfigParser
+from xdg import BaseDirectory
+import os
+
+
+def fixConfigOption(section, option, value, silent=True):
+    """Force a configuration option value, writing it in the first found user
+    config file, eventually creating a new user config file if none is found.
+
+    @param section (str): the config section
+    @param option (str): the config option
+    @param value (str): the new value
+    @param silent (boolean): toggle logging output (must be True when called from sat.sh)
+    """
+    config = SafeConfigParser()
+    target_file = None
+    for file_ in C.CONFIG_FILES[::-1]:
+        # we will eventually update the existing file with the highest priority, if it's a user personal file...
+        if not silent:
+            log.debug(_("Testing file %s") % file_)
+        if os.path.isfile(file_):
+            if file_.startswith(os.path.expanduser('~')):
+                config.read([file_])
+                target_file = file_
+            break
+    if not target_file:
+        # ... otherwise we create a new config file for that user
+        target_file = BaseDirectory.save_config_path('sat') + '/sat.conf'
+    config.set(section, option, value)
+    with open(target_file, 'wb') as configfile:
+        config.write(configfile)  # for the next time that user launches sat
+    if not silent:
+        if option in ('passphrase'):  # list here the options storing a password
+            value = '******'
+        log.warning(_("Config auto-update: %(option)s set to %(value)s in the file %(config_file)s") %
+                    {'option': option, 'value': value, 'config_file': target_file})