Ming, After check your scim package, I found that scim's gtk immodule libraries were put in "/usr/lib/gtk-2.0/2.3.5". You should change it into "/usr/lib/gtk-2.0/2.4.0". And, probably, you should invoke gtk-query-immodules-2.0 in postinst to register scim input method with gtk2.4. -- Best Regards, Carlos