Using boot.iso and install.img dated 2008-09-10, and trying to put /home on an iscsi disk, /home would not get mounted when booting the install. Part of the problem here is that iscsi-initiator-utils do not get installed even when using iscsi disks. RHEL-5 has a fix for this in yuminstall.py around line 1202
I've got a fix for this, I'll send the patch to the mailinglist (no git access yet, this is being worked on) reassigning to me.
I've commited the fix to git now, this will get picked up in the next anaconda rawhide build, closing.