Upgraded my late 2012 mini to Yosemite. I keep this Mac in the basement and only use it via VNC (something like Back to my Mac screen sharing) - that is, it is headless (no monitor, no keyboard attached). I can connect OK - about the same as Mavericks - but it is unusable because the Finder windows for all folders _Except_ Applications are "empty" - no files visible. There are also some screen artifacts, like mouse cursor leaving a shadow trail. Anyone else use their Mac like this - and have same issues?