Fix this bug:

http://sourceforge.net/tracker/index.php?func=detail&aid=481117&group_id=31862&atid=403711

modules/Pisg/Parser/Logfile.pm

@@ -447,8 +447,8 @@ sub _parse_words
         # Also ignore stuff from URLs.
         next if ($word =~ m{https?|^//});
 
-        $stats->{wordcounts}{lc($word)}++;
-        $stats->{wordnicks}{lc($word)} = $nick;
+        $stats->{wordcounts}{$word}++;
+        $stats->{wordnicks}{$word} = $nick;
     }
 }