Eu instalei o sistema operacional Ubuntu 12.04LTS, mas quando adicionei um novo repositório com os pacotes, encontrei este erro:
Unable to resolve the package dependencies
Informação solicitada por @electron:
sudo dpkg --configure -a
sudo apt-get install -f
Reading package lists ... Done
Building dependency tree
Reading state information ... Done
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
sudo apt-get update
E: The download of some index files failed, they have been ignored, or old ones were used instead.