Allthough QSslError::errorString() uses QObject::tr(QT_TRANSLATE_NOOP(QSslError,<error>) to translate ssl-error messages, they are not translated. Reviewing the current untranslated .ts file of Qt, the messages do not appear in the file, so I think lupdate does not find them, and as such, they are not translated.

Since we are developing a Browser (using QtWebkit) targeting non-english speakers this is rather bad as they cannot understand the error that happened.