I have an ATI video card in my computer and install the driver manually from AMD's website since Linux Mint doesn't have a pre-made package. I updated some system files that mint was showing in the system updater and when i rebooted, my computer promptly took a shit all over itself.
Luckily I back up all of my files regularlary.
I had to reinstall the system and noticed that AMD released a new driver a few day ago. It's working fine. I don't know what the problem with the old one was. I guess I'll have to check for updates occasinally.