[pygtk] gtkwarning on textview's context menu

[TK Soh]

I am getting some warning messages when bringing up context menu by
right-clicking in the textview widget. The problem is also seen on
pygtk's example textview-basic.py:

    textview-basic.py:160: GtkWarning: Input method am_et should not
use GTK's translation domain gtk20
      gtk.main()
    textview-basic.py:160: GtkWarning: Input method cyrillic_translit
should not use GTK's translation domain gtk20
      gtk.main()
    textview-basic.py:160: GtkWarning: Input method inuktitut should
not use GTK's translation domain gtk20
      gtk.main()
    ...

FYI, I am using  Python-2.5.1, PyGTK-2.10.6 and  GTK-2.10.11.

Appreciate if anyone can help explain what the warnings are about, and
how I can get rid of them. Thanks.