Thank you for your advice. The avenue to do a d/l test as suggested above did not work.
Normal testing on upload is OK and being reported to member stats. Testing on d/l, with Norton enabled can only be done on "flatbed file" basis and, whilst results were given they were not registering within member stats.
I have adopted a simple solution ........ disable Norton for the 60 seconds or so that it takes to do the test, normal service is resumed with test results registered, and enable Norton thereafter.
Thanks to all those who offered their advice.
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