Multiple post-activate signal

[gege2061 <gege2061 redaction-developpez com>]

Hello,

I use GtkUIManager and connect my main window on the 'post-activate' signal
to process the actions.

Sometimes the signal is sent twice.

My UIManager class:
http://code.google.com/p/valide/source/browse/trunk/libvalide/uimanager.vala

And the connection of the window:
http://code.google.com/p/valide/source/browse/trunk/libvalide/window.vala#77

What is the problem?

Thank's in advance.
-- 
Nicolas Joseph