segmentation fault in g_object_run_dispose

["Boncek, John" <jboncek Hunter COM>]

Using GTK 2.2.4, we are getting a segmentation fault in
g_object_run_dispose called from gtk_widget_destroy on a fixed container.
The context is a screen that works fine when operated on slowly, such that
all widgets are displayed before any action is taken.  The problem only
occurs if you "type ahead" a button press via a keyboard accelerator which
causes the not-yet-actually-displayed widgets to be deleted so that they
can be recreated with new data.  Here is the debugger breakdown of the
offending fixed container widget at this point.  It looks like it was not
fully created.  In particular ref_count is garbage and several of the
other fields have null values.

m_pGTKFixedContainer=0x8f9e58
        public
                object
                private_flags=61580
                state=.
                saved_state=.
                name=0x0
                style=0x0
                requisition
                        public
                                width=0
                                height=0
                allocation
                        public
                                x=0
                                y=0
                                width=0
                                height=0
                window=0x7a9514
                        public
                                parent_instance
                                        public
                                                g_type_instance
                                                ref_count=7975624
                                                qdata=0x0
                parent=0x0

What could cause this?  Is it necessary to test the widget in some way to
make sure it was fully created before calling gtk_widget_destroy on it?
Or is there a different way of destroying it that would not cause the
problem here?

Sincerely,
John Boncek