Yes, I also realized that with a few tests, in Maemo5 all external keyboards are setup using the SU8W layout, in Maemo4 a generic pc-105 layout is used (+ a lot of regional options). Before we proceed hacking it, I would like to know why they removed the generic layout, since this is a very unharmful thing IMO, seems to me that there's other problems in the layers about X11 (hildon), I hope I'm wrong.