The notorious ‘measurement problem’ has been roving around quantum mechanics for nearly a century since its inception, and has given rise to a variety of ‘in- terpretations’ of quantum mechanics, which are meant to evade it. We argue that no less than six problems need to be distinguished, and that several of them classify as different types of problems. One of them is what traditionally is called ‘the measurement problem’. Another of them has nothing to do with measurements but is a profound metaphysical problem. We also analyse critically T. Maudlin’s (1995) well-known statement of ‘three measurements problems’, and the clash of the views of H. Brown (1986) and H. Stein (1997) on one of the six meansurement problems. Finally, we summarise a solution to one measurement problem which has been largely ignored but tatictly if not explicitly acknowledged.