I've done an apt-get update, but when I did apt-get install firefox it didnt work:
Code:
root@Knoppix:/mnt# apt-get install firefox
Reading Package Lists... Done
Building Dependency Tree... Done
W: Couldn't stat source package list http://non-us.debian.org ./ Packages (/var/                   lib/apt/lists/non-us.debian.org_%7ekitame_mozilla_._Packages) - stat (2 No such                    file or directory)
W: Couldn't stat source package list http://people.debian.org sid/i386/ Packages                    (/var/lib/apt/lists/people.debian.org_%7ebranden_packages_sid_i386_Packages) -                    stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Couldn't find package firefox
what should I do next?