PowerBook Wallstreet II find an OS

I finally got an OS on my PB. I resign myself to install Mac OS 9, but just to be able to use BootX. I first give a try to Ubuntu 6.06. Even if it works, I couldn't recommend anyone to use it since isn't supported anymore : it's an old version and it needs lots of work to make everything works, especially for most recent software. I overwritte my Linux partition with Debian 5.04 + LXDE. At least, it's current and have a lot of packages available in debian repositories. And it works great. Forget to use KDE or Gnome on this type of computer (too old). But LXDE works great. GNUStep could also be used.