I should comment in advance that I'm not at all sure that this belongs in this forum. I originally posted here because two related ecommerce sites were exhibiting the same problem.
This is now looking like a network problem at my end only. If I use the dial-up account which I keep as a backup to connect with the internet, all is fine.
But when I access via DSL, I'm not connecting with the Amazon and dpReview images and style-sheets. They're either on the same server or the same IP range. No indication here that they're being blocked... something I'd normally see if it were happening on my machine.
I checked with a neighbor who's seeing both sites fine. Wondering where to look. As I said, this is affecting all browsers, and I haven't noticed problems connecting with other sites, so this is very specific to the Amazon/dpReview servers.