I am running XFce4 in a new install of Debian 7 install. If I right-click on the notification area and choose "Properies" to configure the notification area, there is a list of applications known by the notification area. Among the applications such as the input manager and battery manager, there is an application called "Main.py" listed as potential item to be displayed or hidden in the notification area. I have never noticed this application appearing before and I have few applications installed, so cannot understand why there is a Python program listed. How can I determine what this program is?