SuSEconfig and read-only proc in 9.2

Hi all, every time after yast ran suseconfig /proc is additionally mounted *read-only* as /var/spool/postfix/proc. My question is how to get rid of this feature. Yes, this may be slightly off topic here, but at least it prevents me from running online-update (yast) and iptables things (write in proc) cronbased without umounting a filesystem first - seems to be nonsense. It concerns all of my boxes running 9.2 with postfix chrooted by yast. Unmounting /var/spool/postfix/proc does apparently not affect anything. Is there a deeper meaning in it in the end? Thanks for any even deeper insight! Joe