NetworkManager applet appears 2 times in system tray

[Stefano Di Martino]

Hi,
I have the strange effect, that, if I'm pasting this in my 
awesome-config, the NetworkManager applet it appears two time in my 
system tray:

|awful.util.spawn_with_shell("nm-applet --sm-disable &")

Is that a bug?

Best regards
Stefano
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