Gee, if that statement were particularly true, my system would be
crashing... But it's not. I have both Sideband and Fast Writes going,
and
my GeForce3 works just fine...

Well, OK then, MOST people with systems crashing when using sidebanding I've
encountered have had GF3s installed. Yours is the first system I heard works
OK with sideband on a GF3.

You learn something new every day.