I have noticed exactly the same lines in my upgrade log the first time (sorry, the evidence was lost), but I also have additional symptoms (see below). When I unchecked cupsys from the upgrade list the upgrade finished without errors and only cupsys is left as an upgradable package.
Trying to upgrade cupsys now fails with a GUI message: "E: /var/cache/apt/archives/cupsys_1.3.2-1ubuntu4_i386.deb: trying to overwrite `/usr/share/doc/libcupsys2/CREDITS.txt', which is also in package libcupsys2" In the log: Preconfiguring packages ... (Reading database ... 136800 files and directories currently installed.) Preparing to replace cupsys 1.3.2-1ubuntu1 (using .../cupsys_1.3.2-1ubuntu4_i386.deb) ... Ignoring nonregistered document cupsys * Stopping Common Unix Printing System: cupsd ...done. Unpacking replacement cupsys ... dpkg: error processing /var/cache/apt/archives/cupsys_1.3.2-1ubuntu4_i386.deb (--unpack): trying to overwrite `/usr/share/doc/libcupsys2/CREDITS.txt', which is also in package libcupsys2 dpkg-deb: subprocess paste killed by signal (Broken pipe) * Starting Common Unix Printing System: cupsd ...done. Errors were encountered while processing: /var/cache/apt/archives/cupsys_1.3.2-1ubuntu4_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: ** Attachment added: "Screenshot" http://launchpadlibrarian.net/9798209/Screenshot-Changes%20applied.png -- Error installing upgraded cupsys https://bugs.launchpad.net/bugs/140002 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs