Is the CSSU effort still alive? I've been doing some updating efforts of my own and have ported Maemo 4.x API changes to new versions of glib, libpixmap, cairo, pango, and atk. My idea is to get a brand new GTK+ stack on the tablets. I also ported a new version of bluez (see here: http://talk.maemo.org/showthread.php?t=81323), but that will take some recoding in order to get the Bluetooth applet to play nice. Also ported dbus, but that's out of whack for some reason.

Anyway, I'm working on porting the latest GTK+ at the moment. I've got a big diff file that's about 24k lines of patches and have gotten through 4k =). Is there an IRC channel you guys hang out on? Let me know if you'd like to use my source packages.