GTK free function doesn't appear to have any affect.

[dE <de techno gmail com>]

I was monitoring the memory usage before and after execution of 
g_object_unref and gtk_list_store_clear, and it didnt change the memory 
usage by a bit.

Is this normal (am I doing it right?)?

e.g. --
gtk_list_store_clear (store);
g_object_unref( G_OBJECT (store) );
g_object_unref ( G_OBJECT ( col_renderer [j] ));

Same goes with GtkBuilder structures.