  We analyze the moduli space of spontaneously broken N=8 supergravity theories
in 4 dimensions with classical Minkowski vacua. We find that all the known
classical vacua, as well as the several new ones we construct here, can be
connected by sending some of the moduli to their boundary values. We also show
that Cremmer-Scherk-Schwarz models can be viewed as special limits of more
general CSO* gaugings, which allow for non-Abelian residual symmetries on the
vacuum. Finally, we find that all the classical Minkowski vacua with fully
broken supersymmetry found so far are unstable with respect to 1-loop
corrections, which drive the effective potential to negative values.
