The beta product is explicitly unsupported, and there are clear warnings at
the download site about use on production machines. I can assure you that
Microsoft does care, the customer support folks are not in a position to
support the beta product.
The 5807 definitions are out there on the distribution servers. Issues with
caches, either ISP's caches, or perhaps on corporate networks, have dogged
the definition update process throughout beta1, and they are a problem with
this update.
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