For the past few days, when I go to certain web pages, the images are not appearing. Some examples are Yahoo's main page, Yahoo images search, and Flickr. I use the latest version of Firefox and Avast free version. If I temporarily disable Avast shields control, the pages load ok. When I enable it, the web pages will not show images. If I use Internet Explorer, the pages load ok with images. It's only been doing it recently and I haven't made any changes. Thanks.