Comment 0 for bug 1082170

$ sudo apt-get install skype-bin:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
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:
 skype-bin:i386 : Depends: libqtwebkit4:i386 (>= 2.2~2011week36) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
$ sudo apt-get install libqtwebkit4:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
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:
 libqtwebkit4:i386 : Depends: libgstreamer-plugins-base0.10-0:i386 (>= 0.10.31) but it is not going to be installed
                     Depends: libgstreamer0.10-0:i386 (>= 0.10.31) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
$ sudo apt-get install libgstreamer-plugins-base0.10-0:i386 libgstreamer0.10-0:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
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:
 libgstreamer-plugins-base0.10-0:i386 : Depends: iso-codes:i386 but it is not installable
 libgstreamer0.10-0:i386 : Depends: libxml2:i386 (>= 2.7.4) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
$ apt-cache policy iso-codes:i386
iso-codes:i386:
  Installed: (none)
  Candidate: (none)
  Version table:
$ apt-cache policy iso-codes
iso-codes:
  Installed: 3.27-1
  Candidate: 3.27-1
  Version table:
 *** 3.27-1 0
        500 http://archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status
$ sudo apt-get install libxml2:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
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:
 dolphin : Depends: kde-runtime but it is not going to be installed
 kde-baseapps-bin : Depends: kde-runtime but it is not going to be installed
 kdebase-runtime : Depends: kde-runtime but it is not going to be installed
 konqueror-nsplugins : Depends: kde-runtime but it is not going to be installed
 kubuntu-debug-installer : Depends: kde-runtime but it is not going to be installed
 libgconf2-4 : Depends: libxml2 (>= 2.7.4) but it is not going to be installed
 libkio5 : Depends: libstreamanalyzer0 (>= 0.7.6) but it is not going to be installed
           Recommends: kdelibs5-plugins (= 4:4.7.4-0ubuntu0.2) but it is not going to be installed
 libsoprano4 : Depends: soprano-daemon (= 2.7.4+dfsg.1-0ubuntu0.1) but it is not going to be installed
 plasma-scriptengine-javascript : Depends: libplasma3 (>= 4:4.6.80) but it is not going to be installed
 qapt-batch : Depends: kde-runtime but it is not going to be installed
 shared-mime-info : Depends: libxml2 (>= 2.7.4) but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

iso-codes is arch-all, so there is no iso-codes:i386. As for libxml2, your guess is as good as mine.