durand,
I found kanotix to be the easiest pure deb install.

Just like knoppix except it has the init scripts etc.

its just got the 06 release with kernel 2.6 so why not try it.
the first thing I do after an install is remove unstable sources but leave testing.

If you need to update KDE then openoffice-de-en needed to be uninstalled first but havnt checked recently.

other than that its as easy as knoppix to install but less livecd parts hanging over.