diff --git a/lgpl.txt b/lgpl.txt
index 65c5ca88..02bbb60b 100644
--- a/lgpl.txt
+++ b/lgpl.txt
@@ -162,4 +162,4 @@ General Public License ever published by the Free Software Foundation.
 whether future versions of the GNU Lesser General Public License shall
 apply, that proxy's public statement of acceptance of any version is
 permanent authorization for you to choose that version for the
-Library.
+Library.
\ No newline at end of file
diff --git a/src/board/UBBoardController.cpp b/src/board/UBBoardController.cpp
index bcbab5a8..edfcd5c6 100644
--- a/src/board/UBBoardController.cpp
+++ b/src/board/UBBoardController.cpp
@@ -1234,7 +1234,6 @@ void UBBoardController::setActiveDocumentScene(UBDocumentProxy* pDocumentProxy,
     if(documentChange)
     {
         emit activeDocumentChanged();
-        // Notify the navigator palette that the document has changed        
         emit setDocOnPageNavigator(pDocumentProxy);
         UBGraphicsTextItem::lastUsedTextColor = QColor();
     }
diff --git a/src/core/UBApplication.cpp b/src/core/UBApplication.cpp
index faab24bf..699f9a37 100644
--- a/src/core/UBApplication.cpp
+++ b/src/core/UBApplication.cpp
@@ -135,27 +135,13 @@ UBApplication::UBApplication(const QString &id, int &argc, char **argv) : QtSing
     UBResources::resources();
 
     if (!undoStack)
-    {
         undoStack = new QUndoStack(staticMemoryCleaner);
-    }
-
-    mApplicationTranslator = new QTranslator(this);
-    mApplicationTranslator->load(UBPlatformUtils::preferredTranslation(QString("sankore_")));
-    installTranslator(mApplicationTranslator);
-
-    QString localString;
-    if (!mApplicationTranslator->isEmpty())
-        localString = UBPlatformUtils::preferredLanguage();
-    else
-        localString = "en_US";
 
-    mQtGuiTranslator = new QTranslator(this);
-    mQtGuiTranslator->load(UBPlatformUtils::preferredTranslation(QString("qt_")));
-    installTranslator(mQtGuiTranslator);
+    QString forcedLanguage("");
+    if(args.contains("-lang"))
+    	forcedLanguage=args.at(args.indexOf("-lang") + 1);
 
-
-    QLocale::setDefault(QLocale(localString));
-    qDebug() << "Running application in:" << localString;
+    setupTranslator(forcedLanguage);
 
     UBSettings *settings = UBSettings::settings();
 
@@ -217,6 +203,51 @@ UBApplication::~UBApplication()
     staticMemoryCleaner = 0;
 }
 
+
+void UBApplication::setupTranslator(QString forcedLanguage)
+{
+	QStringList availablesTranslations = UBPlatformUtils::availableTranslations();
+	QString language("");
+	if(!forcedLanguage.isEmpty()){
+		if(availablesTranslations.contains(forcedLanguage,Qt::CaseInsensitive))
+			language = forcedLanguage;
+		else
+			qDebug() << "forced language " << forcedLanguage << " not available";
+	}
+	else{
+		QString systemLanguage = UBPlatformUtils::systemLanguage();
+		if(availablesTranslations.contains(systemLanguage,Qt::CaseInsensitive))
+			language = systemLanguage;
+		else
+			qDebug() << "translation for system language " << systemLanguage << " not found";
+	}
+
+	if(language.isEmpty()){
+		language = "en_US";
+		//fallback if no translation are available
+	}
+	else{
+	    mApplicationTranslator = new QTranslator(this);
+	    mQtGuiTranslator = new QTranslator(this);
+
+	    mApplicationTranslator->load(UBPlatformUtils::translationPath(QString("sankore_"),language));
+	    installTranslator(mApplicationTranslator);
+
+
+	    mQtGuiTranslator->load(UBPlatformUtils::translationPath(QString("qt_"),language));
+	    if(!mQtGuiTranslator->isEmpty()){
+	    	// checked because this translation could be not available
+	    	installTranslator(mQtGuiTranslator);
+	    }
+		else
+			qDebug() << "Qt gui translation in " << language << " are not available";
+	}
+
+
+    QLocale::setDefault(QLocale(language));
+    qDebug() << "Running application in:" << language;
+}
+
 int UBApplication::exec(const QString& pFileToImport)
 {
     QPixmapCache::setCacheLimit(1024 * 100);
diff --git a/src/core/UBApplication.h b/src/core/UBApplication.h
index 2950005f..efe2c0ec 100644
--- a/src/core/UBApplication.h
+++ b/src/core/UBApplication.h
@@ -121,6 +121,7 @@ class UBApplication : public QtSingleApplication
 
     private:
         void updateProtoActionsState();
+        void setupTranslator(QString forcedLanguage);
         QList<QMenu*> mProtoMenus;
         bool mIsVerbose;
 
diff --git a/src/frameworks/UBFileSystemUtils.cpp b/src/frameworks/UBFileSystemUtils.cpp
index 5d9e018c..658a4389 100644
--- a/src/frameworks/UBFileSystemUtils.cpp
+++ b/src/frameworks/UBFileSystemUtils.cpp
@@ -177,7 +177,7 @@ void UBFileSystemUtils::cleanupGhostTempFolders(const QString& templateString)
 }
 
 
-QStringList UBFileSystemUtils::allFiles(const QString& pDirPath)
+QStringList UBFileSystemUtils::allFiles(const QString& pDirPath, bool isRecursive)
 {
     QStringList result;
     if (pDirPath == "" || pDirPath == "." || pDirPath == "..")
@@ -187,7 +187,7 @@ QStringList UBFileSystemUtils::allFiles(const QString& pDirPath)
 
     foreach(QFileInfo dirContent, dir.entryInfoList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot , QDir::Name))
     {
-        if (dirContent.isDir())
+        if (isRecursive && dirContent.isDir())
         {
             result << allFiles(dirContent.absoluteFilePath());
         }
diff --git a/src/frameworks/UBFileSystemUtils.h b/src/frameworks/UBFileSystemUtils.h
index bd20755b..26ec89d2 100644
--- a/src/frameworks/UBFileSystemUtils.h
+++ b/src/frameworks/UBFileSystemUtils.h
@@ -37,7 +37,7 @@ class UBFileSystemUtils
 
         static QFileInfoList allElementsInDirectory(const QString& pDirPath);
 
-        static QStringList allFiles(const QString& pDirPath);
+        static QStringList allFiles(const QString& pDirPath, const bool isRecurive=true);
 
         static bool deleteDir(const QString& pDirPath);
 
diff --git a/src/frameworks/UBPlatformUtils.h b/src/frameworks/UBPlatformUtils.h
index a4d6d886..0b99b370 100644
--- a/src/frameworks/UBPlatformUtils.h
+++ b/src/frameworks/UBPlatformUtils.h
@@ -103,8 +103,8 @@ class UBPlatformUtils
         static void setFileType(const QString &filePath, unsigned long fileType);
         static void fadeDisplayOut();
         static void fadeDisplayIn();
-        static QString preferredTranslation(QString pFilePrefix);
-        static QString preferredLanguage();
+        static QString translationPath(QString pFilePrefix, QString pLanguage);
+        static QString systemLanguage();
         static bool hasVirtualKeyboard();
         //static void showVirtualKeyboard();
         static void runInstaller(const QString &installerFilePath);
@@ -115,6 +115,7 @@ class UBPlatformUtils
         static QString computerName();
         static UBKeyboardLocale** getKeyboardLayouts(int& nCount);
         static QString urlFromClipboard();
+        static QStringList availableTranslations();
 };
 
 
diff --git a/src/frameworks/UBPlatformUtils_linux.cpp b/src/frameworks/UBPlatformUtils_linux.cpp
index 174e3694..6be93d3f 100644
--- a/src/frameworks/UBPlatformUtils_linux.cpp
+++ b/src/frameworks/UBPlatformUtils_linux.cpp
@@ -20,6 +20,8 @@
 #include <X11/Xlib.h>
 #include <X11/keysym.h>
 
+#include "frameworks/UBFileSystemUtils.h"
+
 
 void UBPlatformUtils::init()
 {
@@ -55,13 +57,22 @@ void UBPlatformUtils::fadeDisplayIn()
     // NOOP
 }
 
-QString UBPlatformUtils::preferredTranslation(QString pFilePrefix)
+QStringList UBPlatformUtils::availableTranslations()
+{
+	QString translationsPath = applicationResourcesDirectory() + "/" + "i18n" + "/";
+	QStringList translationsList = UBFileSystemUtils::allFiles(translationsPath);
+	QRegExp sankoreTranslationFiles(".*sankore_.*.qm");
+	translationsList=translationsList.filter(sankoreTranslationFiles);
+	return translationsList.replaceInStrings(QRegExp("(.*)sankore_(.*).qm"),"\\2");
+}
+
+QString UBPlatformUtils::translationPath(QString pFilePrefix,QString pLanguage)
 {
-    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + preferredLanguage() + ".qm";
+    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + pLanguage + ".qm";
     return qmPath;
 }
 
-QString UBPlatformUtils::preferredLanguage()
+QString UBPlatformUtils::systemLanguage()
 {
     return QLocale::system().name();
 }
diff --git a/src/frameworks/UBPlatformUtils_mac.mm b/src/frameworks/UBPlatformUtils_mac.mm
index e94d254b..33d2bc25 100644
--- a/src/frameworks/UBPlatformUtils_mac.mm
+++ b/src/frameworks/UBPlatformUtils_mac.mm
@@ -184,31 +184,64 @@ void UBPlatformUtils::fadeDisplayIn()
     }
 }
 
-QString UBPlatformUtils::preferredTranslation(QString pFilePrefix)
-{
-    QString qmPath;
-    NSString* filePrefix = [[NSString alloc] initWithUTF8String:(const char*)(pFilePrefix.toUtf8())];
 
+//QString UBPlatformUtils::preferredTranslation(QString pFilePrefix)
+//{
+//    QString qmPath;
+//    NSString* filePrefix = [[NSString alloc] initWithUTF8String:(const char*)(pFilePrefix.toUtf8())];
+
+//    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+//    NSString *lprojPath = [[[NSBundle mainBundle] pathForResource:@"Localizable" ofType:@"strings"] stringByDeletingLastPathComponent];
+//    if (lprojPath)
+//    {
+//        NSString *lang = [[lprojPath lastPathComponent] stringByDeletingPathExtension];
+//        NSString *translationFilePath = [lprojPath stringByAppendingPathComponent:[[filePrefix stringByAppendingString:lang] stringByAppendingPathExtension:@"qm"]];
+//        qmPath = QString::fromUtf8([translationFilePath UTF8String], strlen([translationFilePath UTF8String]));
+//    }
+
+//    [pool drain];
+//    return qmPath;
+//}
+
+//QString UBPlatformUtils::preferredLanguage()
+//{
+//    QFileInfo qmFileInfo = QFileInfo(preferredTranslation("sankore_"));
+//    QDir lprojPath = qmFileInfo.dir();
+//    QFileInfo lprojFileInfo = QFileInfo(lprojPath.absolutePath());
+//    return lprojFileInfo.baseName();
+//}
+
+QStringList UBPlatformUtils::availableTranslations()
+{
     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    NSString *lprojPath = [[NSBundle mainBundle] resourcePath];
+    QString translationsPath =  QString::fromUtf8([lprojPath UTF8String], strlen([lprojPath UTF8String]));
+    QStringList translationsList = UBFileSystemUtils::allFiles(translationsPath, false);
+    QRegExp sankoreTranslationFiles(".*lproj");
+    translationsList=translationsList.filter(sankoreTranslationFiles);
+    [pool drain];
+    return translationsList.replaceInStrings(QRegExp("(.*)/(.*).lproj"),"\\2");
+}
 
-    NSString *lprojPath = [[[NSBundle mainBundle] pathForResource:@"Localizable" ofType:@"strings"] stringByDeletingLastPathComponent];
-    if (lprojPath)
-    {
-        NSString *lang = [[lprojPath lastPathComponent] stringByDeletingPathExtension];
-        NSString *translationFilePath = [lprojPath stringByAppendingPathComponent:[[filePrefix stringByAppendingString:lang] stringByAppendingPathExtension:@"qm"]];
-        qmPath = QString::fromUtf8([translationFilePath UTF8String], strlen([translationFilePath UTF8String]));
-    }
-
+QString UBPlatformUtils::translationPath(QString pFilePrefix, QString pLanguage)
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    NSString *lprojPath = [[NSBundle mainBundle] resourcePath];
+    QString translationsPath =  QString::fromUtf8([lprojPath UTF8String], strlen([lprojPath UTF8String]));
     [pool drain];
-    return qmPath;
+    return translationsPath + "/" + pLanguage + ".lproj/" + pFilePrefix + pLanguage + ".qm";
 }
 
-QString UBPlatformUtils::preferredLanguage()
+QString UBPlatformUtils::systemLanguage()
 {
-    QFileInfo qmFileInfo = QFileInfo(preferredTranslation("sankore_"));
-    QDir lprojPath = qmFileInfo.dir();
-    QFileInfo lprojFileInfo = QFileInfo(lprojPath.absolutePath());
-    return lprojFileInfo.baseName();
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    NSUserDefaults* defs = [NSUserDefaults standardUserDefaults];
+    NSArray* languages = [defs objectForKey:@"AppleLanguages"];
+    NSString* preferredLang = [languages objectAtIndex:0];
+    QString result = QString::fromUtf8([preferredLang UTF8String], strlen([preferredLang UTF8String]));
+    [pool drain];
+    return result;
 }
 
 void UBPlatformUtils::runInstaller(const QString &installerFilePath)
diff --git a/src/frameworks/UBPlatformUtils_win.cpp b/src/frameworks/UBPlatformUtils_win.cpp
index 04f09420..4127e7f1 100644
--- a/src/frameworks/UBPlatformUtils_win.cpp
+++ b/src/frameworks/UBPlatformUtils_win.cpp
@@ -20,6 +20,7 @@
 #include <windows.h>
 #include <shellapi.h>
 
+#include "frameworks/UBFileSystemUtils.h"
 #include "core/memcheck.h"
 
 void UBPlatformUtils::init()
@@ -59,14 +60,22 @@ void UBPlatformUtils::fadeDisplayIn()
     // NOOP
 }
 
-QString UBPlatformUtils::preferredTranslation(QString pFilePrefix)
+QStringList UBPlatformUtils::availableTranslations()
 {
-    QString localPreferredLanguage = preferredLanguage();
-    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + localPreferredLanguage + ".qm";
+	QString translationsPath = applicationResourcesDirectory() + "/" + "i18n" + "/";
+	QStringList translationsList = UBFileSystemUtils::allFiles(translationsPath);
+	QRegExp sankoreTranslationFiles(".*sankore_.*.qm");
+	translationsList=translationsList.filter(sankoreTranslationFiles);
+	return translationsList.replaceInStrings(QRegExp("(.*)sankore_(.*).qm"),"\\2");
+}
+
+QString UBPlatformUtils::translationPath(QString pFilePrefix,QString pLanguage)
+{
+    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + pLanguage + ".qm";
     return qmPath;
 }
 
-QString UBPlatformUtils::preferredLanguage()
+QString UBPlatformUtils::systemLanguage()
 {
     return QLocale::system().name();
 }
diff --git a/src/gui/UBDocumentNavigator.cpp b/src/gui/UBDocumentNavigator.cpp
index 37544b55..916cd6c8 100644
--- a/src/gui/UBDocumentNavigator.cpp
+++ b/src/gui/UBDocumentNavigator.cpp
@@ -263,14 +263,6 @@ void UBDocumentNavigator::resizeEvent(QResizeEvent *event)
     // Update the thumbnails width
     mThumbnailWidth = (width() > mThumbnailMinWidth) ? width() - 2*border() : mThumbnailMinWidth;
 
-    // Update the scene rect
-    //    QRect sceneRect;
-    //    sceneRect.setWidth(width() - 2*border());
-    //    sceneRect.setHeight(height() - 2*border());
-    //    sceneRect.moveLeft(border());
-    //    sceneRect.moveTop(border());
-    //    scene()->setSceneRect(sceneRect);
-
     // Refresh the scene
     refreshScene();
 }
diff --git a/src/gui/UBLeftPalette.cpp b/src/gui/UBLeftPalette.cpp
index 00e0a4d9..4ef5225e 100644
--- a/src/gui/UBLeftPalette.cpp
+++ b/src/gui/UBLeftPalette.cpp
@@ -45,7 +45,7 @@ UBLeftPalette::~UBLeftPalette()
  */
 void UBLeftPalette::updateMaxWidth()
 {
-    setMaximumWidth(270);
+    setMaximumWidth((int)(parentWidget()->width() * 0.45));
 }
 
 /**
diff --git a/src/gui/UBRightPalette.cpp b/src/gui/UBRightPalette.cpp
index 26923eac..f8190528 100644
--- a/src/gui/UBRightPalette.cpp
+++ b/src/gui/UBRightPalette.cpp
@@ -69,7 +69,7 @@ void UBRightPalette::resizeEvent(QResizeEvent *event)
  */
 void UBRightPalette::updateMaxWidth()
 {
-    setMaximumWidth((int)((parentWidget()->width() * 2)/3));
+    setMaximumWidth((int)(parentWidget()->width() * 0.45));
     setMaximumHeight(parentWidget()->height());
     setMinimumHeight(parentWidget()->height());
 }
diff --git a/src/gui/UBThumbnailWidget.cpp b/src/gui/UBThumbnailWidget.cpp
index dc87f1b6..e42122bb 100644
--- a/src/gui/UBThumbnailWidget.cpp
+++ b/src/gui/UBThumbnailWidget.cpp
@@ -887,11 +887,6 @@ void UBImgTextThumbnailElement::Place(int row, int col, qreal width, qreal heigh
         qreal scaleFactor = qMin(scaleWidth, scaleHeight);
         UBThumbnail* pix = dynamic_cast<UBThumbnail*>(this->thumbnail);
 
-        if(pix)
-        {
-            scaleFactor = qMin(scaleFactor, 1.0);
-        }
-
         QTransform transform;
         transform.scale(scaleFactor, scaleFactor);