Hello,
as the Gumstix I've got have been lying around in the lab without any real documentation. My recent issues give me reason to thing, that they're not what I think them to be. Probably somebody can give me some help or tell me how to find out. Following the two links you'll see two photos of my boards.

http://s173.photobucket.com/albums/w54/ozillator/Gumstix/?action=view&current=Foto0064.jpg
http://s173.photobucket.com/albums/w54/ozillator/Gumstix/?action=view&current=Foto0063.jpg

Thanks!