Update -- it's not just css images; it's all css background colors and text colors. Layout is all completely normal, but all colour and background stuff doesn't work (links are all blue, pages all white, etc.).

See: http://kb.mozillazine.org/Website_colors_are_wrong Website colors are wrong

Firefox > Preferences > Content : Fonts & Colors: Colors > [[X]"Allow pages to choose their own colors, instead of my selections above"

I have had the same problem happen. I was copying an image a few days ago and accidentally clicked on something when I right clicked on the image to copy. At that moment all my images were gone. I don't know how to get them back. The page loads as normal just don't have any images.

Please help!

I'm having this problem, but narrowed it down to Firebug. I have "Allow pages to choose their own colors, instead of my selections above" checked, so that's not it. I uninstalled Firebug and reinstalled it and reset all settings, but I still cannot see images on our home page.

Okay, I fixed it, just not sure why this mattered. I just did a Clear Console and the images are now showing.

I am also having this problem. I have tried all solutions mentioned in this thread, but none seem to work. I also use Firebug, but clearing the console does nothing. Neither does uninstalling Firebug. I noticed that in the Firefox Error Console I receive warnings for these issues. For example on this page I see numerous warning like:

Warning: Error in parsing value for 'background-image'. Declaration dropped. Source File: http://support.mozilla.com/en-US/questions/681224?s=css+images&as=s Line: 0

What's interesting is that it seems like this also effects other browser styling like the syntax coloring on the "View Page Source" panel.

I'm using Firefox 3.6.10

Turns out that in the Web Developer Add-on "Disable Page Colors" was somehow set. I wonder if there's a keyboard shortcut for this that was accidentally activated.

I had the same problem I clicked view page source and Ifind out that fire fox is commenting out my css links

   <link href="css/....css" rel="stylesheet" type="text/css" />
   <link href="css/....css" rel="stylesheet" type="text/css" />

... the fire fox 3.6.2 wa commenting out the lines between comments

Can you post a link?

Make sure that there aren't any comment tags that have more than two consecutive hyphens like "---" or unclosed or not properly closed comments.

yes there was more than one hyphens I removed the comments any way thanks

You're welcome