QLineEdit password mode

I use the following code to create a password field
editPassword = new QLineEdit(this);
editPassword->setEchoMode(QLineEdit::Password);
editPassword->setInputMethodHints(Qt::ImhHiddenText| Qt::ImhNoPredictiveText|Qt::ImhNoAutoUppercase);

With N97 and N97 mini, when user uses physical keyboard to input password, predictive mode is still working, the password is automatically "corrected" and it's cause a lot of trouble for user.

This is issue is claimed to be fixed inversion 4.6. But I'm still 4.7 and it still exits.
(The previous task is : http://bugreports.qt.nokia.com/browse/QTBUG-11673)