  I consider N=1 U(N) gauge theory with matter in the adjoint, fundamental and
anti-fundamental representations. Focusing on the equations defining the
Riemann surface that describes the quantum theory, the gaugino condensates (and
related superpotentials) are calculated in the limit of SU(N) gauge group, both
in the pure theory and in the presence of matter. In the case without
fundamental matter it is investigated the structure of the space of vacua. In
particular it is discussed how different vacua can be related, in a way which
finally helps to count them.
