i would love any help with this just to help out i already ran these comands
sudo apt-get clean
sudo apt-get autoremove
sudo apt-get update
sudo apt-get upgrade
sudo apt-get -f install
i would love any help with this just to help out i already ran these comands
sudo apt-get clean
sudo apt-get autoremove
sudo apt-get update
sudo apt-get upgrade
sudo apt-get -f install
i would remove these sources from software list go to update center
-settings or system parammeters software sources
.Then to other software
and search for berle/blinking,dockbar,jsevi84,merlwiz79 package just uncheck it.. i guess its not supported yet by this release or try another repository.Then type sudo apt-get update -f && sudo apt-get upgrade and see if its gone. This 404 errors you get when repository is not working
For Cinnamon
Remove old PPA
sudo add-apt-repository --remove ppa:merlwiz79/cinnamon-ppa
Add PPA
sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable
sudo apt-get update && sudo apt-get install cinnamon
*Will update my answer soon for the rest 404 ppa