When I turn on laptop, with Ubuntu 12.04 installed, Pidgin Internet messanger appears in the list of the little letter from the right of the screen, up.
I don't want pidgin start by itself. I want to start it myself and stop it myself.
How?
Is it listed in
System > Preferences > Startup Applications
If don't follow next steps:
sudo sed -i "s/NoDisplay=true/NoDisplay=false/g" /etc/xdg/autostart/*.desktop
Also, this video should be helpful: Tricks to Speed Up Ubuntu.