my problem is a few days ago i reinstalled Debian Lenny from a dvd which i had earlier used.After the installation was over i installed gcc and g++ compilers using synaptic package manager without any problem...
But today when i tried to install certain other softwares (like firefox,amarok,vlc...)i got an error message stating "pl insert debian cd/dvd in /cdrom and try again..."
but actually the dvd was inside and mounted in /media... when i tried to change the repository i found an message like this
The repository information has changed. You have to click on the "Reload" button for your changes to take effect
and on doing so i get an error message like..
W: There is no public key available for the following key IDs:
wat sholud i do...??