ok fellas, i think there is a simple answer to all these problems: high speed cd burning.
given the fact that i'm using two separate cdrom drives with the two motherboards,
and given the fact that one of them actually burned the cd in question,
and given the fact that bash/bunzip errors did not indicate any disk io error,
it comes as a rather unexpected surprise to me but :
epia system was occasionally hanging right after loading udev.
i always though it was due to the very same reason bash/unzip were failing.
after all, there were no disk io errors, and the errors were repeatable.
so, at some point i though i should also give a try with some other cdrom. just for any case.
and imagine my surprise, the result was a perfectly working installation.
i guess this settles the whole affair. happily ;)
to me, it is still hard to connect the bash broken pipes with faulty cd reading ...
thanks for the help guys
fikin
p.s. apparently via chipset is supported just fine in
2.6.20.
and yes, via Samuel chipset (epia m) reports i686 but in fact has to be threated as i586.
http://gentoo-wiki.com/Safe_Cflags