This is something weird. I installed this machine around a month ago with a clean install of ubuntu 11.04. (via network install as this laptop does not have a cdrom) The only third party software installed is an application to manage a hdspa usb modem, but I've checked in the software package (tar.gz) and there is no libc included.
I've then tried to upgrade the to 11.10 using the graphical update manager. The first try failed due to problem with the italian mirrror (the connection got dropped several times). I switched to another mirror and tried again and got a popup saying that the installation of libc have failed. So I let the installation complete and then tried to reinstall the libc by hand, getting the error stated in the log below. I can't track down from where the older libc come. Even the 11.04 release contained the 2.13 version of libc, so I can't explain how a 2.12 version was present on the system during the upgrade. I totally missed the old release number while I tried to debug the problem, so in any case this seems to be a isolated weird case and not a bug in the installer ** Changed in: eglibc (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874030 Title: package libc6 2.13-0ubuntu13 failed to install/upgrade: ErrorMessage: package libc6 is already installed and configured To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/874030/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs