It will shut off for now but will start again when you reboot. A common misconception is that if I shut them off I will never be able to use them again this is not true at all. You will just have to start them manually from the program list which take about 3 seconds longer. The Systray is really just a place for shortcuts to your currently running programs. We only want to shut off what you don t need.
Lets move to another program hideout, the start up menu itself.
Hopefully this is empty, if not don t be afraid to delete them, they are leeches sucking the lifeblood off your system.