GtkTextView flickers when inside GtkScrolledWindow and invoking gtk_adjustment_set_value

[Saulius Menkevicius <razzmatazz mail lt>]

I have GtkTextView widget contained inside GtkScroolView. Normal (manual gui) movements of
scrollbar with mouse doesn't produce any flicker.
But for some reason the following code makes the GtkScrollView flicker:
------------ >8 ------------------------
        adj = gtk_scrolled_window_get_vadjustment(
                        GTK_SCROLLED_WINDOW(p->scroll_w));
        switch(scrool)
        {
        case SCROLL_HOME:
                new_value = adj->lower;
                break;
        case SCROLL_END:
....
        }
        if(new_value < adj->lower) new_value = adj->lower;
        else if(new_value > adj->upper) new_value = adj->upper;

        if(new_value != adj->value) {
                gtk_adjustment_set_value(adj, new_value);
        }
}
------ >8 --------

Thanks,
        -- Saulius Menkevicius