  We consider supersymmetric QCD in the free magnetic phase with massless and
massive flavors. The theory has a supersymmetry breaking pseudo-moduli space of
vacua and a runaway behavior far away from the origin. A two-loop computation
reveals that the origin is destabilized and there is no meta-stable SUSY
breaking solution. We also study the embedding of this model in type IIA string
theory and find evidence for similar behavior. The perturbative brane dynamics
involves simple interactions between branes, correctly predicting the two-loop
result in the gauge theory. Our results also apply to the case when all the
flavors are massive but have hierarchy among them, leading to possible
instability which is manifest both in field theory and the brane description.
