In some applications (like gedit or MS Word) the standard ctrl + v / c / z / y / s shotcuts have stopped working.
Instead I have to use ctrl + ins for copying, shift + ins for pasting and so on.
This, as you can guess, is really annoying (though in gedit it strongly discourages cut and paste code if you know if I mean). But still, what have I done wrong and how I can fix it? In the system as a whole, standard shortcuts are working OK, and only some applications are affected.
At least in Word, check Options under Customize Ribbon to make sure your shortcuts have not been altered. If so, you may need to reset.