We have the same issue at our office. I, myself, have accidently removed an appt when actually going to do something else. Just a short move of my mouse and I bump the left click button (bumping it on the keyboard). I don't have long arms and get annoyed having to pick up the mouse to allow more move room for the mouse. It doesnt take much to have this happen. I tried that step up above, the box was not checked. Once you start the delete (by accident) clicking the red "x" doesnt even cancel out the move.
