About UI for n900 Debian....

Enlightenment is clearly superior and much works already but the old und pretty much abandoned Gnome Mobile (in this case "Sato") interface is still floating around.

http://www.pokylinux.org/about/ (I think it supports newer GTK+ version than said 2.12 but not gtk3 of course)
sources: http://git.yoctoproject.org/cgit/cgit.cgi/

Why? No Idea, I kind of always liked it and was sad it became discontinued.