ERROR:

While connecting with nm-applet on debian wheezy system to wireless network popups error;

Failed to add/activate connection: (32) Insufficient privileges.

SOLUTION:
1. Create a file…
# vim /etc/polkit-1/localauthority/50-local.d/org.freedesktop.NetworkManager.pkla

+ add content
***********
[nm-applet]
Identity=unix-group:netdev
Action=org.freedesktop.NetworkManager.*
ResultAny=yes
ResultInactive=no
ResultActive=yes
******************************************
2. Restart system

# reboot 

Wireless now works (nm-applet). 🙂

PREREQUISITES:
User must be in netdev group.

URL: found on pastebin.com