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phranque - 11:30 pm on Sep 16, 2010 (gmt 0)
although the VBScript appears to be within the "on page" code, the status code response is actually sent before, or rather in this case instead of, the document.
so it appears to be doing the correct thing which is good.
what would concern and is not clear to me is if you are redirecting several legacy pages to a single new location which is usually a bad thing to do.