> > Having a stable in-kernel API is complete nonsense. It would function > > May I ask how many years experience you have with kernel development > of any operating system? I wrote a small real time OS in 1984, and He's right experience or otherwise. A simple RTOS focussed on stability and a specific niche is not comparable to working on a large modern OS whose hardware platform is evolving rapidly and which grows in lines/minute. You can work out the effective man power on the 10 lines of debugged code/day rule of thumb. Alan