Comment 3 for bug 490724

If this was fixed (please provide a changelog entry when saying that something has been fixed?), it seems to have regressed, as I saw the exact same failure on today's upgrade.

Preparing to replace brasero 2.28.2-0ubuntu1 (using .../brasero_2.29.4-0ubuntu1_i386.deb) ...
Unpacking replacement brasero ...
dpkg: error processing /var/cache/apt/archives/brasero_2.29.4-0ubuntu1_i386.deb (--unpack):
 trying to overwrite '/usr/lib/nautilus/extensions-2.0/libnautilus-brasero-extension.so', which is also in package libbrasero-media0 0:2.28.2-0ubuntu1
dpkg-deb: subprocess paste killed by signal (Broken pipe)

Note that Conflicts or whatever is not normally the correct solution to this kind of problem. You normally need to use Replaces.