The paramagnetic phase of transition-metal oxides -which is systematically described as metallic, contrary to experimentis a paradigmatic example. These systems are a challenge also for more advanced methods such as the GW method. However, this problem arises since we are modelling the paramagnetic phase as nonmagnetic. have recently shown that band-structure theories can give a correct description of these systems provided that one models the spin-disordered paramagnetic phase using a larger supercell.