Whenever I try to view the main Posts page, none of the images display at all. I do not mean that they fail to load, I mean that I only see ads, the clickable list of tags on the left, and the page scrolling options.

I use Firefox to browse.

Does anyone have any advice/help?

Thank you in advance. Any help is appreciated.

I have the same issue on my laptop and I use IE but on another laptop that uses IE there is no issue in seeing it. So I think it's the computers.
I can view the pics if I am linked directly to one.

What version of Firefox do you use? Is it up to date?

Do you have Javascript disabled in your Firefox options or by the NoScript addon?

Do any errors pop up or show up anywhere on the screen when you attempt to view the post index?

Does this happen on your other browser(s), too? Can you check?

I may be a little late here, but I too had this same problem. Luckily i found a way to fix it.
You have to click on the "Tools" tab near the top of the browser, then click on "internet options". Once the internet options box is opened, click on the "security" tab. From there click on "custom level". Scroll down to the "scripting" section, and on "active scripting" set it to "disable". Finally click ok and then ok again, and when you go to the posts page, the thumbnails will show up and are able to be viewed.

This happends to me on my phone