/dev/zero

For some reason the various images I use on the main index page have stopped appearing when I view my page with Firefox. Everything looks normal when I use IE. The LiveHTTP Headers plug-in for Firefox tells me Firefox isn’t even attempting to download the images. I can right click on an image and select “view” and it displays it, but if I go back to my blog, nothing there.
There are at least 5 images that should always be there: The God Hates Shrimp banner, the book cover image from Amazon, the Weatherpixie box, a small geourl box and a small Zempt banner.