  We investigate the presence of extended ionized outflows in 18 luminous type
2 AGNs (11 quasars and 7 high luminosity Seyfert 2s) at 0.3<z<0.6 based on
VLT-FORS2 spectroscopy. We infer typical lower limits on the radial sizes of
the outflows R>=severalx100 pc and upper limits R<1-2 kpc. Our results are
inconsistent with related studies which suggest that large scale R~several-15
kpc are ubiquitous in QSO2. We study the possible causes of discrepancy and
propose that seeing smearing is the cause of the large inferred sizes. The
implications in our understanding of the feedback phenomenon are important
since the mass M (through the density), mass injection M(dot) and energy
injection rates E(dot) of the outflows become highly uncertain. One conclusion
seems unavoidable: M, M(dot), E(dot) are modest or low compared with previous
estimations. No evidence is found supporting that typical outflows can affect
the interstellar medium of the host galaxies accross spatial scales >~1-2 kpc.
