Ldomctl/ldomd related system hang on T5240?

Hi all,

I have been trying to setup ldoms on a Sun T5240. Every ldom.conf seems 
to lead to a system hang at "OpenBoot initializing"(as reported in the 
ILOM).
The T2000 that I have hasn't provided any issue. So I'm guessing there 
is some difference with ILOM instead of ALOM configuration that I've 
missed, or maybe
something different about the hypervisor version?

An example of ldom.conf that causes the hang:
domain primary {
        vcpu 16
        memory 8G
}

Versions from "->show /HOST" on the T5420's ILOM
hypervisor_version = Hypervisor 1.7.4.a 2009/09/21 08:25
obp_version = OBP 4.30.4 2009/08/19 07:25
post_version = POST 4.30.4 2009/08/19 07:50
sysfw_version = Sun System Firmware 7.2.4.e 2009/09/21 09:50

Running showhost on the T2000's ALOM
Sun-Fire-T2000 System Firmware 6.7.11  2010/10/12 12:33

Host flash versions:
OBP 4.30.4.b 2010/07/09 13:48
Hypervisor 1.7.3.c 2010/07/09 15:14
POST 4.30.4.b 2010/07/09 14:24


Resetting the system on the T5240 with the the ldom.conf from above 
results
in just the | spinner and no other output.

Does anyone have some insight here?

Thanks!

Trevis

PS: Looking through the archives, I've found reference to a bug, that I 
have
encountered as well, where the memory left for the primary domain is not
correctly calculated. Should anyone be interested in being somewhat of I 
would be more than happy to attempt to tackle that issue.