QLocale::system().name() returns "C" instead of "de"

Hi, I am working on a german windows 2000 workstation and wanted to try out a little application that I have written for our company. I had created translation files and wanted to load them at startup but realised they were not loaded. After putting in debug print statements I found out that the locale returned is "C" -- the fallback default locale -- as opposed to "de" which should be the case since this is a german windows installation. Can anybody tell me what I am doing wrong? May it be a windows 2000 issue?

Code:

#include <QApplication>
#include <QDebug>
#include <QLocale>
#include <QTranslator>
#include "pollmonitor.h"
#include "mainwindow.h"
 
#include <iostream> // DEBUG
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
    app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
 
    // Settings
    QCoreApplication::setOrganizationName("MLHB");
    QCoreApplication::setOrganizationDomain("mlhb.de");
    QCoreApplication::setApplicationName("Hygiene-Befund");
 
    // Translations
    QString locale = QLocale::system().name();
    qDebug() << locale; // DEBUG
 
    QTranslator appTranslator;
    QTranslator qtTranslator;
    QString appTranslation = app.applicationDirPath()
            + "/../translations/" + QString("dirmon_" + locale + ".qm");
    QString qtTranslation = app.applicationDirPath()
            + "/../translations/" + QString("qt_" + locale + ".qm");
 
    // Load App Translation file
    bool b;
    b = appTranslator.load(appTranslation);
    if (!b)
       qDebug() << app.tr("couldn't load translation file %1").arg(appTranslation).toLatin1();
 
    // Load Qt Translation file
    b = qtTranslator.load(qtTranslation);
    if (!b)
       qDebug() << app.tr("couldn't load translation file %1").arg(qtTranslation);
 
    app.installTranslator(&appTranslator);
    app.installTranslator(&qtTranslator);
 
    // Main Window
    MainWindow mw;
    mw.show();
    return app.exec();
}