always appears the message "E: Unable to locate package" at the end of the installati

[wordi]

Hay guys ...
I was having a problem, not a long time I install linux 1.0, I always get the same problem,.
when install chromium-browser s, display a message like this:

root@localhost:~# apt-get install chromium-browser
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package chromium-browser

when install flashplugin nonfree free and display a message like this:

root@localhost:~# apt-get install flashplugin-installer
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package flashplugin-installer
root@localhost:~# sudo apt-get install flashplugin-nonfreeReading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package flashplugin-nonfre

I was looking for problem solving in

http://docs.kali.org/

was not found, and the search in this forum I got a response to do apt-get update :

root@localhost:~# apt-get update
Hit http://security.kali.org kali/updates InRelease  
Hit http://security.kali.org kali/updates/main i386 Packages
Hit http://security.kali.org kali/updates/contrib i386 Packages
Hit http://security.kali.org kali/updates/non-free i386 Packages
Ign http://security.kali.org kali/updates/contrib Translation-en_US
Ign http://security.kali.org kali/updates/contrib Translation-en
Ign http://security.kali.org kali/updates/main Translation-en_US
Ign http://security.kali.org kali/updates/main Translation-en
Ign http://security.kali.org kali/updates/non-free Translation-en_US
Ign http://security.kali.org kali/updates/non-free Translation-en
Reading package lists... Done
root@localhost:~# cat /etc/apt/sources.list
# 

# deb cdrom:[Debian GNU/Linux 7.0 _Kali_ - Official Snapshot i386 LIVE/INSTALL Binary 20130311-20:38]/ kali contrib main non-free

#deb cdrom:[Debian GNU/Linux 7.0 _Kali_ - Official Snapshot i386 LIVE/INSTALL Binary 20130311-20:38]/ kali contrib main non-free

## Security updates
deb http://security.kali.org/kali-security kali/updates main contrib non-free

I expect help and problem solving.

[epicsub]

Hay guys ...
I was having a problem, not a long time I install linux 1.0, I always get the same problem,.
when install chromium-browser s, display a message like this:

root@localhost:~# apt-get install chromium-browser
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package chromium-browser

when install flashplugin nonfree free and display a message like this:

root@localhost:~# apt-get install flashplugin-installer
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package flashplugin-installer
root@localhost:~# sudo apt-get install flashplugin-nonfreeReading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package flashplugin-nonfre

I was looking for problem solving in

http://docs.kali.org/

was not found, and the search in this forum I got a response to do apt-get update :

root@localhost:~# apt-get update
Hit http://security.kali.org kali/updates InRelease  
Hit http://security.kali.org kali/updates/main i386 Packages
Hit http://security.kali.org kali/updates/contrib i386 Packages
Hit http://security.kali.org kali/updates/non-free i386 Packages
Ign http://security.kali.org kali/updates/contrib Translation-en_US
Ign http://security.kali.org kali/updates/contrib Translation-en
Ign http://security.kali.org kali/updates/main Translation-en_US
Ign http://security.kali.org kali/updates/main Translation-en
Ign http://security.kali.org kali/updates/non-free Translation-en_US
Ign http://security.kali.org kali/updates/non-free Translation-en
Reading package lists... Done
root@localhost:~# cat /etc/apt/sources.list
# 

# deb cdrom:[Debian GNU/Linux 7.0 _Kali_ - Official Snapshot i386 LIVE/INSTALL Binary 20130311-20:38]/ kali contrib main non-free

#deb cdrom:[Debian GNU/Linux 7.0 _Kali_ - Official Snapshot i386 LIVE/INSTALL Binary 20130311-20:38]/ kali contrib main non-free

## Security updates
deb http://security.kali.org/kali-security kali/updates main contrib non-free

I expect help and problem solving.

Having the same problem- can someone shed some light here!