So a friend of mine called me a couple of nights ago, saying that her Mac was showing an alert that the startup disk has no more space. Investigated it with her and the culprit was her habit of dragging music downloads into iTunes but not deleting them from the downloads folder :roll eyes: So we went through the folder and deleted all the duplicate music and restarted. Now it's beach balling everywhere and apps are taking forever to open if they even open at all (looking at you, System Prefs). A friend of mine suggested clearing the Caches and Launch Agents folders in the Library. Is this sound advice? And anything else you think might help would be much appreciated!