• 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.

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

• http://kb.mozillazine.org/Images_or_animations_do_not_load

Thanks for your reply, it didn't work though. I've had the problem before and firefox helped but I can't remember what the solution was. I have a feeling it might have been to do with cookies or cache, but I've cleared those and still no good!