  Testing the stability of the electroweak vacuum in any extension of the
Standard Model Higgs sector is of great importance to verify the consistency of
the theory. Multi-scalar extensions as the Minimal Supersymmetric Standard
Model generically lead to unstable configurations in certain regions of
parameter space. An exact minimization of the scalar potential is rather an
impossible analytic task. To give handy analytic constraints, a specific
direction in field space has to be considered which is a simplification that
tends to miss excluded regions, however good to quickly check parameter points.
We describe a yet undescribed class of charge and color breaking minima as they
appear in the Minimal Supersymmetric Standard Model, exemplarily for the case
of non-vanishing bottom squark vacuum expectation values constraining the
combination mu Yb in a non-trivial way. Contrary to famous A-parameter bounds,
we relate the bottom Yukawa coupling with the supersymmetry breaking masses.
Another bound can be found relating soft breaking masses and mu only. The
exclusions follow from the tree-level minimization and can change dramatically
using the one-loop potential. Estimates of the lifetime of unstable
configurations show that they are either extremely short- or long-lived.
