  We consider some recent developments in GRB/afterglow observations: (i) the
appearance of a very hard prompt component in GRB 941017, and (ii) variability
in the early afterglow light curves of GRB 021004 and GRB 030329. We show that
these observations fit nicely within the internal-external shocks model. The
observed variability indicates that the activity of the inner engine is more
complicated than was thought earlier and that it involves patchy shells and
refreshed shocks. We refute the claims of Berger et al. and of Sheth et al.
that the radio and mm observations of GRB 030329 are inconsistent with
refreshed shocks.
