diff --git a/Metadata/clients.xml b/Metadata/clients.xml
index 2a12dcf..03b7030 100644
--- a/Metadata/clients.xml
+++ b/Metadata/clients.xml
@@ -11,7 +11,7 @@
   <Client name="titanic.adm.crans.org" profile="titanic" pingable="Y" pingtime="1198039153.13"/>
   <Client name="mdr.adm.crans.org" profile="mdr" pingable="Y" pingtime="1198039153.12"/>
   <Client name="irc.adm.crans.org" profile="irc" pingable="Y" pingtime="14112"/>
-  <Client name="o2.adm.crans.org" profile="irc" pingable="Y" />
+  <Client name="o2.adm.crans.org" profile="o2" pingable="Y" />
   <!-- La ferme -->
   <Client name="canard.adm.crans.org" profile="canard" pingable="Y" pingtime="1198039153.13"/>
   <Client name="oie.adm.crans.org" profile="oie" pingable="Y" pingtime="1198039153.12"/>
diff --git a/Metadata/groups.xml b/Metadata/groups.xml
index 39aa218..c9e0f63 100644
--- a/Metadata/groups.xml
+++ b/Metadata/groups.xml
@@ -99,7 +99,7 @@
     <Group name="crans"/>
   </Group>
 
-  <Group name="o2.adm.crans.org"
+  <Group name="o2"
          profile="true">
     <Group name="crans"/>
   </Group>
diff --git a/Python/etc/apt/sources.list b/Python/etc/apt/sources.list
index 072589d..560cb13 100644
--- a/Python/etc/apt/sources.list
+++ b/Python/etc/apt/sources.list
@@ -34,3 +34,8 @@ else:
 
     @# Paquet construit a la main
     source("custom ./")
+
+    if has("o2"):
+        prefix = ""
+        @# o2 a (au moins) besoin de postgresql-8.2
+        source("http://www.backports.org/backports.org/ etch-backports main contrib")