I installed Ubuntu 12.04LTS operating system but when I added a new repository with the packages I find this error:
Unable to resolve the package dependencies
Information requested by @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.