diff --git a/rtdata/languages/Catala b/rtdata/languages/Catala
index f1cabcf12..ffb2321e7 100644
--- a/rtdata/languages/Catala
+++ b/rtdata/languages/Catala
@@ -1,3 +1,5 @@
+#00 Catala
+#01 10.10.2009: JMG
 ADJUSTER_RESET_TO_DEFAULT;Restaura predeterminats
 CURVEEDITOR_FILEDLGFILTERANY;Tots els fitxers
 CURVEEDITOR_FILEDLGFILTERCURVE;Fitxers de corba
diff --git a/rtdata/languages/Chinese (Simplified) b/rtdata/languages/Chinese (Simplified)
index 77d8f9191..19c13f2a8 100644
--- a/rtdata/languages/Chinese (Simplified)	
+++ b/rtdata/languages/Chinese (Simplified)	
@@ -1,3 +1,9 @@
+#00 Chinese (Simplified)
+#01 06.11.2008
+#02 Chinese simplified
+#03 Yang Gao (grantyale)
+#04 Added new translations for 2.4beta, fixed mistranslations(eg. Vignetting - 暗角/失光 instead of 紫边 which corresponds to purple fringing, and RL Deconvolution)
+#05 based on Version 13.2.2008 by Forrest Sun
 ADJUSTER_RESET_TO_DEFAULT;重置缺省参数
 CURVEEDITOR_FILEDLGFILTERANY;任意文件
 CURVEEDITOR_FILEDLGFILTERCURVE;曲线文件
diff --git a/rtdata/languages/Chinese (Traditional) b/rtdata/languages/Chinese (Traditional)
index 651e83f7b..3662a57b0 100644
--- a/rtdata/languages/Chinese (Traditional)	
+++ b/rtdata/languages/Chinese (Traditional)	
@@ -1,3 +1,7 @@
+#00 Chinese (Traditional)
+#01 29.07.2008
+#02 Chinese Traditional
+#03 Mingjui Liao
 ADJUSTER_RESET_TO_DEFAULT;重置預設參數
 BATCHQUEUE_AUTOSTART;Auto start
 CURVEEDITOR_FILEDLGFILTERANY;任意文件
diff --git a/rtdata/languages/Czech b/rtdata/languages/Czech
index 42a97861d..ec749ce87 100644
--- a/rtdata/languages/Czech
+++ b/rtdata/languages/Czech
@@ -1,3 +1,8 @@
+#00 Czech
+#01 20.1.2008: translated by absolution
+#02 21.2.2008: updated by mkyral (typos and some missing strings)
+#03 24.4.2008: updated by mkyral (for version 2.4m1)
+#04 28.10.2008: updated by mkyral (for version 2.4 beta1)
 ADJUSTER_RESET_TO_DEFAULT;Vrátit se k původnímu
 CURVEEDITOR_FILEDLGFILTERANY;Jakékoliv soubory
 CURVEEDITOR_FILEDLGFILTERCURVE;Soubory křivek
diff --git a/rtdata/languages/Dansk b/rtdata/languages/Dansk
index 71e12696c..7db74f32e 100644
--- a/rtdata/languages/Dansk
+++ b/rtdata/languages/Dansk
@@ -1,3 +1,7 @@
+#00 Danish
+#01 Translated by krengbo
+#02 2009-06-27
+ADJUSTER_RESET_TO_DEFAULT;Nulstil til standard
 CURVEEDITOR_FILEDLGFILTERANY;Alle filer
 CURVEEDITOR_FILEDLGFILTERCURVE;Kurve-filer
 CURVEEDITOR_LINEAR;Lineær
diff --git a/rtdata/languages/Deutsch b/rtdata/languages/Deutsch
index 48b777993..50fe048eb 100644
--- a/rtdata/languages/Deutsch
+++ b/rtdata/languages/Deutsch
@@ -1,3 +1,13 @@
+#00 Deutsch
+#01 (keenonkites; Aktualisierte Version für 2.3 beta2)
+#02 (phberlin; basiert auf keenonkites' Erstübersetzung)
+#03 08.01.2008/15.01.2008/20.02.2008
+#04 19.12.2008: keenonkites, Anpassungen für 2.4beta4
+#05 20.12.2007
+#06 20.9.2008: keenonkites, Anpassungen für 2.4m2
+#07 22.12.2007
+#08 4.4.2008: Anpassungen für 2.4
+#09 Leichte Anpassungen (keenonkites/klonk)
 BATCHQUEUE_AUTOSTART;Automatisch starten
 BATCH_PROCESSING;Batch-Verarbeitung
 CURVEEDITOR_CUSTOM;Angepasst
diff --git a/rtdata/languages/English b/rtdata/languages/English
index 8b1378917..796ed7e3e 100644
--- a/rtdata/languages/English
+++ b/rtdata/languages/English
@@ -1 +1 @@
-
+#00 English
diff --git a/rtdata/languages/English (UK) b/rtdata/languages/English (UK)
index e6a134437..c3c2dcae3 100644
--- a/rtdata/languages/English (UK)	
+++ b/rtdata/languages/English (UK)	
@@ -1,3 +1,5 @@
+#00 English (UK)
+#01 16.01.2009: Richard Regal
 HISTORY_MSG_34;Avoid Colour Clipping
 HISTORY_MSG_37;Colour Boost
 HISTORY_MSG_38;White Balance Method
diff --git a/rtdata/languages/Espanol b/rtdata/languages/Espanol
index e6da59ac4..173c0175c 100644
--- a/rtdata/languages/Espanol
+++ b/rtdata/languages/Espanol
@@ -1,3 +1,12 @@
+#00 Espanol
+#01 15.1.2008: keenonkites, first translation
+#02 03.03.2008: Ioritz Ibarguren, corrections
+#03 05.04.2008: keenonkites, completed for 2.4m1
+#04 09.04.2008: Ramon, partly corrected (part of 2.3)
+#05 29.04.2008: Ramon, small correction
+#06 09.06.2008: Ramon, Adaptions regarding 2.4m1 and others
+#07 20.09.2008: keenonkites, first version for 2.4m2
+#08 19.12.2008: keenonkites, first version for 2.4beta4
 ADJUSTER_RESET_TO_DEFAULT;Restablece los valores predeterminados
 CURVEEDITOR_FILEDLGFILTERANY;Cuaquier archivo
 CURVEEDITOR_FILEDLGFILTERCURVE;Archivos de curvas
diff --git a/rtdata/languages/Euskara b/rtdata/languages/Euskara
index ef8e2bf62..c53058558 100644
--- a/rtdata/languages/Euskara
+++ b/rtdata/languages/Euskara
@@ -1,3 +1,6 @@
+#00 Euskara (Basque)
+#01 03.03.2008
+#02 Ioritz Ibarguren
 ADJUSTER_RESET_TO_DEFAULT;Hasierako balioetara itzuli
 CURVEEDITOR_FILEDLGFILTERANY;Artxibo guztiak
 CURVEEDITOR_FILEDLGFILTERCURVE;Kurba artxiboak
diff --git a/rtdata/languages/Francais b/rtdata/languages/Francais
index eaea3a2b4..4c0480cb8 100644
--- a/rtdata/languages/Francais
+++ b/rtdata/languages/Francais
@@ -1,3 +1,8 @@
+#00 Français
+#01 1.3.2008: Hombre
+#02 1.5.2008: Hombre: updates for 2.4m1
+#03 27.10.2008: Hombre: updates for 2.4b1
+#04 18.11.2008: Hombre: updates for 2.4b2
 ADJUSTER_RESET_TO_DEFAULT;Réglages par défaut
 BATCHQUEUE_AUTOSTART;Démarrage auto
 BATCH_PROCESSING;Traitement par lot
diff --git a/rtdata/languages/Greek b/rtdata/languages/Greek
index 10eb918ea..dc01d0784 100644
--- a/rtdata/languages/Greek
+++ b/rtdata/languages/Greek
@@ -1,3 +1,5 @@
+#00 Greek
+#01 14.05.2008: zeusalmighty
 ADJUSTER_RESET_TO_DEFAULT;Επαναφορά προεπιλογών
 CURVEEDITOR_FILEDLGFILTERANY;Οποιοδήποτε αρχείο
 CURVEEDITOR_FILEDLGFILTERCURVE;Αρχεία καμπυλών
diff --git a/rtdata/languages/Hebrew b/rtdata/languages/Hebrew
index c0fc8ee36..dd6b23951 100644
--- a/rtdata/languages/Hebrew
+++ b/rtdata/languages/Hebrew
@@ -1,3 +1,5 @@
+#00 Hebrew
+#01 21.02.2008: initially translated by ???
 ADJUSTER_RESET_TO_DEFAULT;ברירת מחדל
 CURVEEDITOR_FILEDLGFILTERANY;קבצים כלשהם
 CURVEEDITOR_FILEDLGFILTERCURVE;קבצי עקמות
diff --git a/rtdata/languages/Italian b/rtdata/languages/Italian
index e044547e0..edb12f381 100644
--- a/rtdata/languages/Italian
+++ b/rtdata/languages/Italian
@@ -1,3 +1,9 @@
+#00 Italian
+#01 UTF-8(unix mode) 
+#02 translated by breek, pantaraf, chelidon, roberto
+#03 IMPORTANTE: facci sapere sul forum di rawtherapee nella sezione del locale italiano se ci sono errori, qui http://www.rawtherapee.com/forum/viewtopic.php?p=3354#3354
+#04 IMPORTANT: post on the italian locale in the rawtherapee if are any errors, here http://www.rawtherapee.com/forum/viewtopic.php?p=3354#3354
+#05 01-11-2008
 ADJUSTER_RESET_TO_DEFAULT;Valori originali
 CURVEEDITOR_FILEDLGFILTERANY;Qualsiasi file
 CURVEEDITOR_FILEDLGFILTERCURVE;File curve
diff --git a/rtdata/languages/Japanese b/rtdata/languages/Japanese
index a3e388296..133ac91f1 100644
--- a/rtdata/languages/Japanese
+++ b/rtdata/languages/Japanese
@@ -1,3 +1,7 @@
+#00 Japanese
+#01 2009-02-18 by A3novy
+#02 updated to RT2.4-RC by paul.matthijsse
+#03 2010-06-20 updated to RT3.0 alpha 1 by A3novy
 ADJUSTER_RESET_TO_DEFAULT;リセット初期化
 BATCHQUEUE_AUTOSTART;オートスタート
 BATCH_PROCESSING;バッチ処理
diff --git a/rtdata/languages/Latvian b/rtdata/languages/Latvian
index 121a94faf..698f51e91 100644
--- a/rtdata/languages/Latvian
+++ b/rtdata/languages/Latvian
@@ -1,3 +1,4 @@
+#00 Latvian
 ADJUSTER_RESET_TO_DEFAULT;Atmest uz noklusēto
 CURVEEDITOR_FILEDLGFILTERANY;Visi faili
 CURVEEDITOR_FILEDLGFILTERCURVE;Līkņu faili
diff --git a/rtdata/languages/Magyar b/rtdata/languages/Magyar
index 89671ff5d..f6cc38b61 100644
--- a/rtdata/languages/Magyar
+++ b/rtdata/languages/Magyar
@@ -1,3 +1,4 @@
+#00 Magyar
 ADJUSTER_RESET_TO_DEFAULT;Alaphelyzetbe állítás
 CURVEEDITOR_FILEDLGFILTERANY;Minden fájl
 CURVEEDITOR_FILEDLGFILTERCURVE;Görbe fájlok
diff --git a/rtdata/languages/Nederlands b/rtdata/languages/Nederlands
index b193c47e9..b0f0cae96 100644
--- a/rtdata/languages/Nederlands
+++ b/rtdata/languages/Nederlands
@@ -1,3 +1,8 @@
+#00 Nederlands
+#01 26.12.2007: door Rens Duijsens en Brent Huisman
+#02 14.03.2008: updated by reggybe
+#03 01.02.2009: updated to RT2.4-RC by paul.matthijsse
+#04 02-05-2010: updated to rt3a1 by paul.matthijsse
 ADJUSTER_RESET_TO_DEFAULT;Terug naar beginwaarde
 BATCHQUEUE_AUTOSTART;Autostart
 BATCH_PROCESSING;Batch-verwerking
diff --git a/rtdata/languages/Norsk BM b/rtdata/languages/Norsk BM
index 182df1016..0e4f1537a 100644
--- a/rtdata/languages/Norsk BM	
+++ b/rtdata/languages/Norsk BM	
@@ -1,3 +1,6 @@
+#00 Norwegian
+#01 2009-02-12
+#02 Translated by Esben L. Kristensen
 ADJUSTER_RESET_TO_DEFAULT;Tilbake til standard
 CURVEEDITOR_FILEDLGFILTERANY;Hvilken som helst fil
 CURVEEDITOR_FILEDLGFILTERCURVE;Kurvefiler
diff --git a/rtdata/languages/Polish b/rtdata/languages/Polish
index 2eb1ba0c8..a4285838e 100644
--- a/rtdata/languages/Polish
+++ b/rtdata/languages/Polish
@@ -1,3 +1,10 @@
+#00 Polish
+#01 24.12.2007
+#02 Mateusz Ludwin
+#03 -----------------------------
+#04 08.01.2010
+#05 Initial update for 3.0 release
+#06 Bartosz "Simek" Kaszubowski
 ADJUSTER_RESET_TO_DEFAULT;Przywróć domyślne
 CURVEEDITOR_FILEDLGFILTERANY;Wszystkie pliki
 CURVEEDITOR_FILEDLGFILTERCURVE;Pliki z krzywymi
diff --git a/rtdata/languages/Polish (Latin Characters) b/rtdata/languages/Polish (Latin Characters)
index 8ba09cfd1..7538fa787 100644
--- a/rtdata/languages/Polish (Latin Characters)	
+++ b/rtdata/languages/Polish (Latin Characters)	
@@ -1,3 +1,9 @@
+#00 Polish
+#01 24.12.2007
+#02 Mateusz Ludwin
+#03 -----------------------------
+#04 08.01.2010#05 Initial update for 3.0 release
+#06 Bartosz "Simek" Kaszubowski
 ADJUSTER_RESET_TO_DEFAULT;Przywroc domyslne
 CURVEEDITOR_FILEDLGFILTERANY;Wszystkie pliki
 CURVEEDITOR_FILEDLGFILTERCURVE;Pliki z krzywymi
diff --git a/rtdata/languages/Portugues (Brasil) b/rtdata/languages/Portugues (Brasil)
index df2684a15..7e5610037 100644
--- a/rtdata/languages/Portugues (Brasil)	
+++ b/rtdata/languages/Portugues (Brasil)	
@@ -1,3 +1,5 @@
+#00 Português Brasileiro
+#01 01.02.2010: Vitor da Silva Gonçalves
 ADJUSTER_RESET_TO_DEFAULT;Restaurar para o padrão
 CURVEEDITOR_FILEDLGFILTERANY;Quaisquer Arquivos
 CURVEEDITOR_FILEDLGFILTERCURVE;Arquivos de curva 
diff --git a/rtdata/languages/Russian b/rtdata/languages/Russian
index cb6a0b906..9f40a9fcb 100644
--- a/rtdata/languages/Russian
+++ b/rtdata/languages/Russian
@@ -1,3 +1,9 @@
+#00 Russian
+#01 23.12.2007
+#02 ArtDen
+#03 20.07.2008: Denis Artemov
+#04 16.02.2009: Kvark
+#05 26.02.2010: Sergey Smirnov AKA smiserg
 ADJUSTER_RESET_TO_DEFAULT;По умолчанию
 CURVEEDITOR_FILEDLGFILTERANY;Любые файлы
 CURVEEDITOR_FILEDLGFILTERCURVE;Файлы тоновых кривых
diff --git a/rtdata/languages/Serbian (Cyrilic Characters) b/rtdata/languages/Serbian (Cyrilic Characters)
index b415b77b2..517aa89a6 100644
--- a/rtdata/languages/Serbian (Cyrilic Characters)	
+++ b/rtdata/languages/Serbian (Cyrilic Characters)	
@@ -1,3 +1,5 @@
+#00 Serbian (Cyrilic)
+#01 by gpopac 2010-09-15
 ADJUSTER_RESET_TO_DEFAULT;Врати на подразумевано
 CURVEEDITOR_FILEDLGFILTERANY;Све датотеке
 CURVEEDITOR_FILEDLGFILTERCURVE;Датотеке са кривама
diff --git a/rtdata/languages/Serbian (Latin Characters) b/rtdata/languages/Serbian (Latin Characters)
index f3bbaa689..2d7c92032 100644
--- a/rtdata/languages/Serbian (Latin Characters)	
+++ b/rtdata/languages/Serbian (Latin Characters)	
@@ -1,3 +1,5 @@
+#00 Serbian (Latin)
+#01 by gpopac 2010-09-15
 ADJUSTER_RESET_TO_DEFAULT;Vrati na podrazumevano
 CURVEEDITOR_FILEDLGFILTERANY;Sve datoteke
 CURVEEDITOR_FILEDLGFILTERCURVE;Datoteke sa krivama
diff --git a/rtdata/languages/Slovak b/rtdata/languages/Slovak
index 82b15c914..f68a27432 100644
--- a/rtdata/languages/Slovak
+++ b/rtdata/languages/Slovak
@@ -1,3 +1,7 @@
+#00 Sloven?~Mina
+#01 08.05.2008
+#02 01.02.2009
+#03 (Slapo)
 ADJUSTER_RESET_TO_DEFAULT;Resetovať na predvolené nastavenia
 CURVEEDITOR_FILEDLGFILTERANY;Všetky súbory
 CURVEEDITOR_FILEDLGFILTERCURVE;Súbory kriviek
diff --git a/rtdata/languages/Suomi b/rtdata/languages/Suomi
index b75a25993..e2b04f4ca 100644
--- a/rtdata/languages/Suomi
+++ b/rtdata/languages/Suomi
@@ -1,3 +1,5 @@
+#00 Finnish 
+#01 Compiled by T.Kauppinen 3.5.2009
 ADJUSTER_RESET_TO_DEFAULT;Palauta oletusasetukset
 CURVEEDITOR_FILEDLGFILTERANY;Kaikki tiedostot
 CURVEEDITOR_FILEDLGFILTERCURVE;Käyrätiedostot
diff --git a/rtdata/languages/Swedish b/rtdata/languages/Swedish
index 958341748..76da6af25 100644
--- a/rtdata/languages/Swedish
+++ b/rtdata/languages/Swedish
@@ -1,3 +1,6 @@
+#00 Swedish
+#01 Translated by Emil Ericsson
+#02 2008-01-22
 ADJUSTER_RESET_TO_DEFAULT;Återställ till standard
 CURVEEDITOR_FILEDLGFILTERANY;Vilka filer som helst
 CURVEEDITOR_FILEDLGFILTERCURVE;Kurvfiler
diff --git a/rtdata/languages/Turkish b/rtdata/languages/Turkish
index c4f879b1c..8c14768be 100644
--- a/rtdata/languages/Turkish
+++ b/rtdata/languages/Turkish
@@ -1,3 +1,6 @@
+#00 Turkish
+#01 2.3.2008
+#02 Oguz
 ADJUSTER_RESET_TO_DEFAULT;Varsayılana dön
 CURVEEDITOR_FILEDLGFILTERANY;Bütün dosyalar
 CURVEEDITOR_FILEDLGFILTERCURVE;Eğri dosyaları
diff --git a/rtdata/languages/default b/rtdata/languages/default
index 48ffedce0..7caa288ae 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -1,3 +1,5 @@
+#00 default translation file 
+#01 Developers should add translations to this file and then run 'generateDifferences.sh' script to update other locales.
 ADJUSTER_RESET_TO_DEFAULT;Reset to default
 BATCHQUEUE_AUTOSTART;Auto start
 BATCH_PROCESSING;batch processing