I installed both Gnome/Unity and Xfce on my desktop, and I use Xfce (Xubuntu) as default when I log in. But every time I log in, nautilus launches by opening a folder and changing my wallpaper. The weird thing is that it's not even in "start-up applications". How to prevent nautilus from launching in Xubuntu? So far, I'm just doing killall nautilus every time I log in.