Yesterday morning i installed Mint xfce on an old laptop.
I wanted to install synaptics drivers for the touchpad because i use the trackball as mouse but need the touchpad for clicking. Something that isnt configureable in the default driver.
When i copied an example config file and added my line, i rebooted the computer.
The GUI broke because in the example config file, there were "..." To indicate writing further options, but xorg couldnt interpret or ignore it, so i had to figure out how to edit textfiles in the command line.
No fun times, and definetely a risk for new users.