[notting@nostromo: ~]$ rpm -q gnome-vfs2
gnome-vfs2-2.14.0-1
[notting@nostromo: ~]$ rpm -q --scripts gnome-vfs2
postinstall scriptlet (using /bin/sh):

export GCONF_CONFIG_SOURCE=`gconftool-2 --get-default-source`
SCHEMAS="system_http_proxy.schemas system_dns_sd.schemas system_smb.schemas
desktop_gnome_url_handlers.schemas desktop_default_applications.schemas
system_storage.schemas"
for S in $SCHEMAS; do
  gconftool-2 --makefile-install-rule /etc/gconf/schemas/$S > /dev/null
done

/sbin/ldconfig
postuninstall program: /sbin/ldconfig
[notting@nostromo: ~]$ rpm -ql gnome-vfs2 | grep schema
/etc/gconf/schemas/desktop_default_applications.schemas
/etc/gconf/schemas/desktop_gnome_url_handlers.schemas
/etc/gconf/schemas/system_dns_sd.schemas
/etc/gconf/schemas/system_http_proxy.schemas
/etc/gconf/schemas/system_smb.schemas

Note no system_storage.schemas.