Would you be able to give a presentation on the GNU Hurd Operating System ? I had given a talk on this topic at mumbai LUG meet few months back.
*www.ilug-bom.org.in/Data/Objects/M/MinutesMarch2005/viewObject
Hurd is based on Microkernel architecture, and is actually a collection of several Hird servers runnin on top of GNUMach 1.3 microkernel in usermode, (rather than kernel mode as in Linux)
Presentation slides are available here:
*db.ilug-bom.org.in/lug-authors/anurag/microkernel-orientation-slides.ps.gz