lib64ncurses5: Os seguintes pacotes têm dependências não atendidas

Question

Quando tentei instalar lib64ncurses5 no meu Ubuntu, recebi esta mensagem de erro:

$ sudo apt-get install lib64ncurses5
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:
 lib64ncurses5:i386 : Depends: lib64tinfo5:i386 (= 5.9-4) but it is not going to be installed
                      Depends: libc6-amd64:i386 (>= 2.4) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Normalmente, o apt-get pode resolver a dependência e instalar todo o pacote necessário. Então, por que ele falha neste caso.

uname output:

Linux server001 3.5.0-39-generic #60~precise1-Ubuntu SMP Wed Aug 14 15:38:41 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux