Tim wrote: >> I find the use of the word "stable" absurd in this context. > > Stable meaning without significant changes, rather than meaning > extremely reliable operation... I guess I give a rather mathematical meaning to the word "stable". A ball in a bowl is stable. A ball on top of my head is not. An unstable kernel is one that fails in an unpredictable way, eg filling the screen with garbage. -- Timothy Murphy e-mail (<80k only): tim /at/ birdsnest.maths.tcd.ie tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland