Unmet dependencies for libnspr4

Question

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.

Answer 1

This is a problem related to a recent stable release update in Ubuntu 12.04. We know that it's affecting a large number of users, according to the statistics on errors.ubuntu.com; but we have not yet been able to reproduce the problem ourselves so can't propose a solution. Please file a bug report by running 'ubuntu-bug libnspr4' from the affected system, and attach the output of this command:

sudo apt-get -oDebug::pkgProblemResolver=true install -f

(There will be a lot of output; you will want to redirect it to a file with '> logfile 2>&1'.)