The recent measurements of the neutrino reactor angle require a
re-examination of flavour models based on discrete groups. Indeed, when these
models deal with the Tri-Bimaximal, the Bimaximal and the Golden Ratio mixing
patterns, some tensions arise in order to accommodate the reactor angle. In
particular, strong constraints come from lepton flavour violating processes,
like mu -> e gamma. We present the analysis and the main results.Comment: 8 pages, 3 figures. Contribution at "Les Rencontres de Physique de la
Vall\'ee d'Aoste". To be published as an issue of Nuovo Cimento
