  We revisit the study of confining vacua in the softly broken N=2
supersymmetric QCD, in the light of some recent developments in our
understanding of the dynamics of N=2 gauge theories. These vacua are
characterized by an effective magnetic $SU(r)$ gauge group ($0\leq r\leq
N_f/2$) and are referred to sometimes as the $r$ vacua. We further clarify the
meaning of $r \leftrightarrow N_{f}-r$ duality arising from the matching of
semi-classical and quantum vacua. A particular attention is paid to certain
singular SCFT's of N=2 SQCD, driven into confinement phase by the adjoint mass
deformation $\mu\, \Phi^{2}$. In some cases they occur as a result of
coalescence of different $r$ vacua as the bare mass is tuned to a critical
value.
