I didn't intend to sound the way it seems i sounded. Sorry for that! Btw, the focus of Minix 3 has changed and it is no longer intended just for research/education. Minix 3 was publicly announced on 24 October 2005 by Andrew Tanenbaum and it is comprehensively redesigned to be usable as a serious system on resource-limited and embedded computers and for applications requiring high reliability.