Packages are not available for installation

After upgrading from 10.04 to 12.04 I am trying to install different packages. For instance ia32-libs and skype (4.0).

When trying to install these, I am getting the 'Unable to correct problems, you have held broken packages' error message.

Output of commands: sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information...

I had installed cinnamon 1.4 on ubuntu 12.04 earlier but i couldnt upgrade it to 1.6+.. so i uninstalled (and purged) it to do a fresh install.. but now i am getting an error as follows

sudo apt-get install cinnamon Reading package lists... Done Building dependency tree Reading state information...

I tried to install packages on the terminal but every time i try it shows this status!! Example i tried to install php-5 and this what it says

sudo apt-get install php5-cli Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package php5-cli

Here's basically what I did to try and fix it:

alex@griever:~$ sudo apt-get install -f [sudo] password for alex: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies...

I was trying to install Chinese(traditional) language pack, but it comes out an unmet dependency error. I have tried sudo apt-get install -f then sudo dpkg --configure -a and sudo apt-get update using the official server already, but the problem still exists. These show up in the terminal:

Reading package lists... Done Building dependency tree Reading state information...

I am having issues with apt-get on my Raspberry Pi. This is the output when I try and install a package:

pi@raspberrypi ~ $ sudo apt-get -f install cowsay Reading package lists... Done Building dependency tree Reading state information...

I am trying to install handbrake-gtk in 12.04 with gnome3 shell

This is what I did: sudo add-apt-repository ppa:stebbins/handbrake-releases sudo apt-get update sudo apt-get install handbrake-gtk

But I get:

Quote:

Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed.

I want to install jre-7u5-linux-x64 on Ubuntu 12.04

marwa@marwa-Vostro-1540:~$ sudo apt-get install [sudo] password for marwa: Reading package lists... Done Building dependency tree Reading state information...

I have tried to install Ubuntu Accomplishments on my clean 12.10 install.

Following the installation instructions as outlined here After entering the final command

sudo apt-get install accomplishments-daemon accomplishments-viewer ubuntu-community-accomplishments ubuntu-desktop-accomplishments accomplishments-lens

I get the following unable to locate package

Reading package lists...