>On a practical basis, I wonder how it works at Mincha; do people pay >close attention to the chatzi kaddish after Ashrei, to see whether >the chazan says "v'yatzmach purkanei", so that they'll know whether >to say "N'kadesh" or "Nakdishach" at Kedusha? Huh? Why would the congregation be saying something which belongs to the Chazzen?