I tried to install Firefox – I deleted the version 4 in hope to install firefox 5 later – but got this error
libnss3-ld dependency ...
I decided to do this
sudo apt-get install libnss3-ld
and went away. When I came back this command had deleted almost everything, drivers, programs, et cetera.
I never thought that
apt-get install could delete anything.
Why did it happen?