If you still haven't upgraded to TFS SP1 because you where reading articles, blogs and forum entries with people have problems then you should now be ready to proceed. Microsoft just released a new version of the GDR Quiescing patch (what's with that name anyway?). Brian talks about it here and you can download the new version here. I'll update my install scripts to use that one and send to my good friend Stephen Borg at Accentient to host them.
Cheers,
ET
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