  We report six BeppoSAX X-ray observations of VW Hydri during and after the
outburst of Sep 23 1998. The outburst flux is lower than the quiescent flux in
the entire observed energy band (0.1-10 keV), in agreement with earlier
observations. The X-ray spectra are fitted with two-temperature plasma and
cooling flow spectral models. These fits show a clear spectral evolution in
X-rays for the first time in VW Hydri: the hard X-ray turn-up after the
outburst is reflected in the emission measure and the temperature. Moreover,
during outburst the 1.5-10 keV flux decreases significantly. We argue that this
is not consistent with the constant flux during a ROSAT outburst observation
made eight years earlier. We conclude from this observation that there are
significant differences between outburst X-ray lightcurves of VW Hydri.
