I have the same issue with alacarte 0.8-0 ubuntu12 on 6.06 LTS . Launching alacarte from terminal gives :
(alacarte:29873): GnomeUI-CRITICAL **: gnome_icon_selection_stop_loading: assertion `gis != NULL' failed /usr/lib/python2.4/site-packages/Alacarte/GnomeFront.py:54: GtkWarning: gtk_widget_hide: assertion `GTK_IS_WIDGET (widget)' failed self.tree = gtk.glade.XML( -- Menu panel doesn't update on apply https://launchpad.net/bugs/34815 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs