Comment 71 for bug 1309578

I was also affected by this bug, it is related to some FM2 motherboards , MSI being one of them.
The fix for this bug is to edit your GRUB file BEFORE you restart your system after updating.
If you did a clean install from a live cd you will have to use f6 during boot and select "noapic" and if that fails try again and select"acpi=off"

You will still need to edit your grub file after boot up to make it permanent.
from the terminal type; gedit /etc/default/grub

The file will open in the editor.
edit this line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash '

to look like this; GRUB_CMDLINE_LINUX_DEFAULT="quiet splash noapic"

then save and exit, you are done..., enjoy!