In php_full_featured_detection_script you may want to add Windows 2003 Server detection:

nt 5.2 => Windows 2003 Server
:?:
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Thanks for the reminder, I forgot about 2003 server, we'll get that updated right away.

<added>That is updated now, as of version 4.9.3, although I haven't checked the browser user agent string to see what it actually says.
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