Yes... now it is working for me also... it was really bzip2 which was missing, as you said Chero.
Here is the full (hopefully) dependency list:
libbonobo, libgnomeui, libbonoboui, libgnome, (lib)gnome-keyring, gnome-vfs, bzip2, libglade, libgsf, libiconv, librsvg, orbit2
Still there are some problems which means just some tweaking I think.
Here is a picture of my first-time-gdm-on-Zaurus:
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