This comes up a lot, but I can't seem to fix it with the solutions listed elsewhere.
I have an unmet dependency from libnspr4.
I have done;
sudo apt-get clean sudo apt-get autoremove sudo apt-get update sudo apt-get install -f
I have changed the server in software sources.
I am not sure I want to remove the package as when I do a dry run it seems to have many many things dependent on it.
I now have 36 packages showing as not upgraded when I do
sudo apt-get install -f
I am becoming reluctant to keep poking around in case I break something.
Help greatly appreciated.