MSMQ unattended installation randomly fails with Vista 64 SP1 usin

[WB]

We have ~200 systems in our test pool. We're using the following command and
unattend file to install MSMQ in unattended mode for Vista 64:

ocsetup.exe MSMQ-Server /unattendfile:"MSMQ_Vista64.xml"

MSMQ_Vista64.xml:
<?xml version="1.0"?>
<unattend>
<servicing>
<package action="configure">
<assemblyIdentity name="Microsoft-Windows-Foundation-Package"
version="6.0.6000.16386" language="neutral" processorArchitecture="amd64"
publicKeyToken="31bf3856ad364e35" versionScope="nonSxS"/>
<selection name="MSMQ-Container" state="true"/>
<selection name="MSMQ-Server" state="true"/>
</package>
</servicing>
</unattend>

This usually works fine, but on random systems it fails. I don't know
if/where anything gets logged for the failure. ProcessExplorer shows ocsetup
running with a PkgMrg child, but it's stuck (no activity). There is a
TrustedInstaller process running, but it seems to run forever (I've let it
run for over 30 minutes and it doesn't go away). I've also tried the
following command, but no log ever appears:

ocsetup.exe MSMQ-Server /log:"c:\msmq.log"

This is only occurring on Vista 64 SP1 (I'll try Vista 64 with no SP next),
and only on random systems.

Any ideas?

 

[WB]

Turns out that it does install, but it takes over 45 minutes!