  In the absence of any additional assumption it is natural to conjecture that
sizeable flavour-mixing mass entries, $\Delta m^2$, may appear in the mass
matrices of the scalars of the MSSM, i.e. $\Delta m^2\sim O(m^2)$. This flavour
violation can still be reconciled with the experiment if the gaugino mass,
$M_{1/2}$, is large enough to yield (through the renormalization group running)
a sufficiently small $\Delta m^2 / m^2$ at low energy. This leads to a gaugino
dominance framework (i.e. $M_{1/2}^2\gg m^2$), which permits a remarkably
model--independent analysis. We study this possibility focussing our attention
on the $\mu\rightarrow e,\gamma$ decay. In this way we obtain very strong and
general constraints, in particular $\frac{M_{1/2}^2}{\Delta m} \simgt 34\ {\rm
TeV}$.
