Miop - 2:47 am on Oct 4, 2005 (gmt 0)
I dunno if this helps, but my other site with plenty similar product issues has barely suffered from the dupe content thing - it's an OS commerce site, so a product that is repeated in more than one section still ony (really!) has one product page. At least for my site, it looks like the template system is the main problem (mixture of php and html). Hope that helps somebody!