Tom, there are two things that activate this type of behavior. One toggle is in the Application Add-ins, and one is in the Variable Manager. You would want those options off if you are not using this functionality. (Actually you have to have both of those toggled on to initiate that, so by toggling either one off it will stop, but I would just turn both off if you aren't using it.) If you want to know more about this capability let me know, but I assume that you really mostly find it bothersome and would like to disable it.
