Why should ALL "Base" packages be ALWAYS upgraded?

[Andrei Maslennikov <Andrei Maslennikov caspur it>]

Hi all, 

when testing "Upgrade" on a newly-installed 6.1 machine I have noted that
a bulk of packages (Base) was reinstalled without any visible reason (the
same exact versions were already present on the system). On 6.0, only the
older versions were being replaced, which is much cleaner.

Thanks ahead for any comment. 

Andrei.

____________________________________________________________________________
Andrei Maslennikov                                  phone : +39   06 4463354
CASPUR Inter-Univ. Computing Consortium and INFN    cell  : +39  335 6214776
c/o Universita' "La Sapienza", 00185 Rome, Italy    fax   : +39   06 4957083
___________________________________________________ mail  : andrei caspur it