Steve, this isn't about uninstalling stuff. It's about not being able to install ia32-libs.
Why invalid when it's a real problem? $ sudo apt-get install ia32-libs-multiarch [...] Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: ia32-libs-multiarch:i386 : Depends: ibus-gtk:i386 but it is not going to be installed Depends: libcanberra-gtk-module:i386 but it is not going to be installed Depends: libcap2:i386 but it is not going to be installed Depends: libgphoto2-2:i386 but it is not going to be installed Depends: libgphoto2-port0:i386 but it is not going to be installed Depends: libsane:i386 but it is not going to be installed Depends: libpam-winbind:i386 but it is not going to be installed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/900512 Title: ia32-libs-multiarch:i386 is not installable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/900512/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs