Miop - 10:40 pm on Oct 3, 2005 (gmt 0)

[I hadn't thought that listing a product in two sections could cause the product page to be considered a dupe, because there is only one product page, but then I read elsewhere that a site may be spidered by more than one googlebot at the same time, making it appear as if it is two identical pages.]

In fact because of the way the templates system works, it *is* two identical products even though the product only exists on one product page - penny just dropped.
Many thanks for your assistance.