diff -Nru dictionaries-common-1.12.1ubuntu1/debian/changelog dictionaries-common-1.12.1ubuntu2/debian/changelog
--- dictionaries-common-1.12.1ubuntu1/debian/changelog	2012-01-04 08:51:02.000000000 +0000
+++ dictionaries-common-1.12.1ubuntu2/debian/changelog	2012-01-06 11:53:55.000000000 +0000
@@ -1,3 +1,11 @@
+dictionaries-common (1.12.1ubuntu2) precise; urgency=low
+
+  * scripts/system/dc-debconf-select.pl: Do not show debconf error for
+    undefined default values, just if the value is defined and corresponds to
+    a non-installed dictionary. (LP: #911961)
+
+ -- Martin Pitt <martin.pitt@ubuntu.com>  Fri, 06 Jan 2012 12:53:25 +0100
+
 dictionaries-common (1.12.1ubuntu1) precise; urgency=low
 
   * Merge with Debian unstable. Remaining Ubuntu changes:
diff -Nru dictionaries-common-1.12.1ubuntu1/scripts/system/dc-debconf-select.pl dictionaries-common-1.12.1ubuntu2/scripts/system/dc-debconf-select.pl
--- dictionaries-common-1.12.1ubuntu1/scripts/system/dc-debconf-select.pl	2011-02-10 12:25:15.000000000 +0000
+++ dictionaries-common-1.12.1ubuntu2/scripts/system/dc-debconf-select.pl	2012-01-06 11:55:09.000000000 +0000
@@ -160,7 +160,7 @@
       if ( $curval =~ /^Manual.*/ or exists $newchoices{$curval} ){
 	# Use priority "medium" if current value is in the new list or mode is set to manual.
 	$priority = "medium";     #
-      } else {
+      } elsif ($curval ne "undefined") {
 	# Otherwise we have a wrong value with no associated entry.
 	# This is an *error* that needs to be signalled and acted upon.
 	# For this reason priority must be higher than the standard one.