THANKS guys! :-)
>
> If you have an old nvidia card, you must install one of the legacy nvidia-
> legacy package. See [1] for instance .
>
>
Indeed I have install the proprietary nvidia legacy driver, just after
Debian installation.
No problems with that. Runs smoothly.
>
> Apt-Pinning [1] is another, more sophisticated way to work around such
> situations but because in this case it's only about a few certain packages
> you want to keep this seems to be the easiest solution.
>
OKI I've done some pinning. :-)
I created this etc/apt/preferences:
Package: *
Pin: origin
http://mirror3.mirror.garr.it/
Pin-Priority: 10
Now some updates were installed (only one nvidia related), but
Synaptic warned me, that couldn't configure successfully, all the
installed packages.
So, I gave as root "aptitude -f install" that uninstalled some
packages (and the nvidia related one).
Now everything seems to be OK!
THANKS AGAIN!!! :-)
G.