Old packages between upgrades

[Julio Merino <jmmv@mail.com>]

Hi all,

I have a question about upgrading the system.

When I upgraded some time ago from slink to potato and then woody, I
had a package, ncurses3.4 installed on the system... This package is
<really> old, but it's not replaced with libncurses4 or
libncurses5. So, I simply erased it without any dependency problem.

My question is that how can all packages with the same problem as this
be removed between upgrades ? Some are old or obsolete and the system
doesn't requires them any more, but when you have -a lot- of packages
installed, it is impossible to find which of this are.

Thanks.

-- 
Do you really think win is easy to use?

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Juli-Manel Merino Vidal <jmmv@mail.com>
    Running Debian GNU/Linux woody
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