diff -r ef0373b55136 -r 758a864f9613 tests/auto/qstring/tst_qstring.cpp
--- a/tests/auto/qstring/tst_qstring.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/tests/auto/qstring/tst_qstring.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -208,6 +208,7 @@
     void repeated_data() const;
     void task262677remove();
     void QTBUG10404_compareRef();
+    void QTBUG9281_arg_locale();
 };
 
 typedef QList<int> IntList;
@@ -4860,6 +4861,17 @@
     QVERIFY(QStringRef(&a2, 1, 2).compare(QStringRef(&a, 1, 3), Qt::CaseInsensitive) < 0);
 }
 
+void tst_QString::QTBUG9281_arg_locale()
+{
+    QLocale l(QLocale::English, QLocale::UnitedKingdom);
+    l.setNumberOptions(QLocale::OmitGroupSeparator);
+    QLocale::setDefault(l);
+    QString str("*%L1*%L2*");
+    str = str.arg(123456).arg(1234.56);
+    QCOMPARE(str, QString::fromLatin1("*123456*1234.56*"));
+    QLocale::setDefault(QLocale::C);
+}
+
 
 
 QTEST_APPLESS_MAIN(tst_QString)