Weird one here, Was changing some settings in the sound panel in system preferences (I turned off system sound effects as they were annoying me) anyway I realised I missed them so I turned them back on but now my CMD+C and CMD+V for copy and paste are making sound effects and it's really annoying, they match whatever SFX that is selected in the list. In 7 years of being an OS X user I have never come across this before. How do I make it stop? EDIT: They still make a sound when the SFX option is disabled!!