Thankx Qgil !
A quick glance at the "why" is already telling me that "power management stuff" is closed source , so basically any port of Maemo would need to rewrite that... And Is see also that "most of the OS2008 UI is closed source"
Looks like already a rather big hurdle to me and basically would not leave much left from the "maemo experiance" i have now on my N800...