--- a/i18n/de.po	Wed Feb 15 18:12:38 2012 +0100
+++ b/i18n/de.po	Mon Feb 20 11:45:16 2012 +0100
@@ -962,6 +962,9 @@
 msgid "a float is expected"
 msgstr "Eine Dezimalzahl (float) wird erwartet."
 
+msgid "a number (in seconds) or 20s, 10min, 24h or 4d are expected"
+msgstr ""
+
 msgid ""
 "a simple cache entity characterized by a name and a validity date. The "
 "target application is responsible for updating timestamp when necessary to "