Description of problem:
network-manager-applet has a .desktop file used for autostart.
It is substandard (in respect to fd.o desktop entry files specs) and misplaced
(irt fd.o autostart specs)

-Encoding=UTF-8 <= deprecated as any .desktop file should be valid UTF-8
-Categories= <= no point for an empty value as it is only used by .desktop files
in $(datadir}/applications/ (for menu display)

Use standard $(sysconfdir)/xdg/autostart/ instead of old deprecated gnome-only
version $(datadir)/gnome/autostart

Patch that would place misplaced .desktop file to the fd.o
mandated standard directory.

http://standards.freedesktop.org/autostart-spec/autostart-spec-latest.html#id2452086

Actually on Ubuntu Gutsy :
/usr/share/autostart/ : empty (really old location)
/usr/share/gnome/autostart/ : 3 files (g-c-c, empathy, nm-applet) => old
gnomeonly
/etc/xdg/autostart/ : 11 files

Version-Release number of selected component (if applicable):
0.6*/gnome SVN trunk

How reproducible:
Everytime (specs compliance problems)

Steps to Reproduce:
1. desktop-file-validate /usr/share/gnome/autostart/nm-applet.desktop
2. ls -l ls -l /usr/share/autostart/ /usr/share/gnome/autostart/ /etc/xdg/autostart/