Ok Falko but i haven't any named user on my ispconfig (perfect setup sarge 3.1) !!!
when i do a ps aux :
ps aux | grep named
i have this answer :
bind 15714 0.0 0.2 29408 2664 ? Ss 09:45 0:00 /usr/sbin/named -u bind -t /var/lib/named
Perhaps the solution is :
chown -R bind:bind /var/lib/named
What do you think ?