No need for a screenshot; it's a CNET issue where the wrong subdomain is occasionally outputted in links, usually when a relative link is used. I've seen it happen in both the old and new forums, though oddly not on other CNET sites. I usually get sent to Reviews, but, regardless, there's nothing wrong on your end; just a glitch they can hopefully resolve in the future.
Occasionally, when I try to go from a specific forum back to Home > Forums, I'm sent to Cnet Shopper. When this is going to happen, my FF status bar will say http://shopper.cnet (or similar) when I mouse over "forums". I'll try to get a screen shot if that would be useful.