For a while I have the problem mentioned in the title. Update is stuck on pre-configuring packages without any other error. I tried almost everything I've found searching Google, but it didn't solve my problem.
btw
sudo apt-get update
sudo apt-get autoclean
sudo apt-get clean
sudo apt-get autoremove
sudo apt-get update && sudo apt-get upgrade
is not working. Can somebody please help me fix this issue?