[ Thanks to Falko
Timme for this link. ]
“The Debian / Ubuntu upgrade mechanism is a wonderful piece of
software. When the new release comes out, just follow the
instructions given by the update manager and the upgrade will be
done almost automatically. Sometimes Ubuntu asks for your help when
you made other changes than the upgrade program itself wants to
make. This howto gives a few tips on how to make your Ubuntu
installation more upgrade-friendly. I tested it on Ubuntu
installations, but the mechanisms in this howto should not be
different for Debian.”