I'm getting the same error but it appears that ia32-libs is not the issue for me.
Trying to upgrade from the command line (after replace natty with oneiric in /etc/apt/sources.list) gives me the following error: $ sudo apt-get update ... $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Failed The following packages have unmet dependencies: kde-baseapps-data : Breaks: dolphin (< 4:4.6.80) but 4:4.6.5-0ubuntu1 is to be installed E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/873883 Title: Natty->Oneiric Upgrade failed: An unresolvable problem occurred while calculating the upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ia32-libs/+bug/873883/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs