Try checking "opensiteexplorer" to check if your backlink anchor text profile to your gallery is "over optimised".
This seems to be ok. If over optimisation is naming the image correctly and also placing the image name on the page under the image then we're all screwed!
Hey HP, is it only the gallery that's dropped?
Mostly yes, some pages have gone down, even though they're unique since I have nothing new to update. No duplicate content, all unique images.
So this is a picture gallery section of your website that is showing product related images?
Yes, it was created to show both the trade and the public just how much the products can vary and also at the same time what alternative, but quite similar products compare, plus it was also made because so many companies, especially in the USA, tried confusion marketing by applying their own names to the products.
Have you considered Google is using user/search metrics to come to the conclusion that the page isn't providing what the user is looking for?
Maybe, maybe not, how would Google ever know the answer to this without actually questioning the user?
I am always checking my trade's products and sometimes I only need only a fraction of a second to know whether it's right or wrong. Does Google determine that fraction of a second as good or bad?
Does it determine me staying on that site and reporting to their webmaster that they have incorrect information as good?
I think that Google became totally confused last summer when I semi re-built one section of the gallery and G kept calling on a removed album. I'be just checked this and nearly one year later Google is still generating a Coppermine error page.
If anyone knows how to generate a proper 404 in Coppermine, please let me know.