These packages from 'testing' conflict, but this is not marked in the packages: libgcj0 2.95.1-5 libgcj300-dev 1:3.0-0pre010403
This is a bug. The packages should be marked as incompatible, so that installing one requires removing the other (or else the conflict should be resolved). Selecting previously deselected package libgcj0. (Reading database ... 50138 files and directories currently installed.) Unpacking libgcj0 (from .../libgcj0_2.95.1-5_i386.deb) ... dpkg: error processing /var/cache/apt/archives/libgcj0_2.95.1-5_i386.deb (--unpack): trying to overwrite `/usr/lib/libgcj.spec', which is also in package libgcj300-dev dpkg-deb: subprocess paste killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/libgcj0_2.95.1-5_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) -- Ashley Yakeley, Seattle WA