Reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

• Press and hold Shift and left-click the Reload button.
• Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• Press "Command + Shift + R" (MAC)

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do not click the Reset button on the Safe mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

If images are missing then check that you aren't blocking images from some domains.

• Check the permissions for the domain in the current tab in "Tools > Page Info > Permissions"

• Check that images are enabled: Tools > Options > Content: [X] Load images automatically
• Check the exceptions in "Tools > Options > Content: Load Images > Exceptions"

• Check the "Tools > Page Info > Media" tab for blocked images (scroll through all the images with the cursor Down key).

If an image in the list is grayed and there is a check-mark in the box "Block Images from..." then remove that mark to unblock the images from that domain.

Make sure that you do not block third-party images, the permissions.default.image pref should be 1.

There are also extensions (Tools > Add-ons > Extensions) and security software (firewall, anti-virus) that can block images.

See also:

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
• http://kb.mozillazine.org/Images_or_animations_do_not_load

Thanks ! The problem seems to have fixed itself without me doing anything. It must have been a temporary problem with the Add-this app.

eta. Oops!!! I didn't mean to choose my reply to Corel as the solution, I meant to choose Corel's reply. I don't see any way to change that. Sorry Corel. You have helped me many times in the past and I appreciate it. Help like this is one of the many reasons I prefer Firefox over IE. (which I won't use at all!!)

You're welcome

You should have an Undo button next to your "Solution Chosen" reply that allows to remove the solution.
Then you can mark another reply as the solution.

What would I do without you?? I don't want to find out!!! I can't believe I didn't see that undo button the first time . Well DUH :)

                  thanks once again

I have a similar problem, but it seems to be spreading -- I'm no longer showing images in the captcha box on any site -- not only on blogs using Blogger, but now a government site and -- ahem -- Mozilla. It started out with one or two sites, but now I don't get them on any site -- just an empty box. I've tried everything you recommended above, and nothing works. Is there a fix?

Well, here's what works for me. When the captcha box is missing I click on send anyhow. It then says I need to correct an error but at that time it always has the captcha box with the letters in it. Then I type the letters and click send again and it works. So far that works every-time for me. good luck!

Thanks -- tried it a couple of times on a couple of sites, but it's not working for me. Anyone have any other ideas?