  We argue that recent data on fluctuations observed in heavy ion collisions
show non-monotonic behaviour as function of number of participants (or "wounded
nucleons") N_W. When interpreted in thermodynamical approach this result can be
associated with a possible structure occuring in the corresponding equation of
state (EoS). This in turn could be further interpreted as due to the occurence
of some characteristic points (like "softest point" or "critical point") of EoS
discussed in the literature and therefore be regarded as a possible signal of
the QGP formation in such collisions. We show, however, that the actual
situation is still far from being clear and calls for more investigations of
fluctuation phenomena in multiparticle production processes to be performed.
