diff -Nuar ubiquity.orig/ubiquity/frontend/base.py  ubiquity/ubiquity/frontend/base.py
--- ubiquity.org/ubiquity/frontend/base.py	2013-02-19 09:14:55.356799416 +0100
+++ ubiquity/ubiquity/frontend/base.py	2013-02-19 09:15:21.484928981 +0100
@@ -91,7 +91,7 @@
         self.dbfilter_status = None
         self.resize_choice = None
         self.manual_choice = None
-        self.locale = None
+        self.locale = os.environ['LANG']
         self.wget_retcode = None
         self.wget_proc = None