Unpacking libmyth-perl (from .../libmyth-perl_0.20.99+trunk15096-0ubuntu0~mythbuntu1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/libmyth-perl_0.20.99+trunk15096-0ubuntu0~mythbuntu1_i386.deb (--unpack):
 trying to overwrite `/usr/share/perl/5.8.8/MythTV/Program.pm', which is also in package mythtv-common
Errors were encountered while processing:
 /var/cache/apt/archives/libmyth-perl_0.20.99+trunk15096-0ubuntu0~mythbuntu1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)