Solaris Branded Zones, Unable to reboot/Halt

Hi People,
Hoping someone can help. Im running Solaris 10 on a Sun Workstation Ultra 45. I have two disks. One disk has the default install of solaris 10 all updated to the latest patches.The second disk is mounted as /zones and holds each of the zones on ZFS. I have then downloaded and installed successfully Solaris 8 and Solaris 9 and Solaris 10 zones. So I have 3 zones.
The problem I am facing is I can boot up all 3 zones fine and they work great, however when I halt or reboot either Solaris 8 or solaris 9, they never come back up. I try and zlogin to them and telnet and ssh and they are totally unresponsive and quite literally dont boot. I have tried to pkill -9 -z zonename ; umount /zonesfilesystem; zpool clear and even rebooted the Global zone. Still will not come up. The only way they will boot after being shutdown is if i shutdown the global zones and turn the server off and back on.
Solaris 10 Zone boots up and down fine with no isses. I have tried this on both UFS and ZFS thinking it might be a file lock issue. Still unable to reboot or halt a zone and bring it back up.
Any help please :)
Thanks in advance.

When they are unable to come back up, what does 'zoneadm list -cv' say? If the state of the zone is "down" or "shutting_down", you can probably benefit from the fix for:
7038404 outstanding zone references should not cause zone_destroy(2) to hang
This is available in 147440-05 (sparc) / 147441-05 (x86) or later.

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