SSL: Partially encrypted. but what?

[jake66]

All of a sudden tonight, the admin portion of my website became 'partially secured'.

I don't recall changing anything that would cause this. How do I determine what is causing the red X on my firefox over the SSL icon?

The secure portion of my actual website is fine, fully secured (green SSL icon).

[MatthewHSE]

Check the source code to make sure no external files (images, css, javascript) are being referenced via http instead of https or relative paths. Also, is it possible your secure certificate has expired?

[rocknbil]

You can also got to Tools->Page Info in FF and view the page properties, then the media tab, then the security tab.

[jake66]

I'd tried all of that but didn't locate anything. I'd even copied the entire source to notepad and did a find -> replace and came up short.

Magically, it stopped. I never changed anything. How peculiar?