Even after "no-cache" meta Firefox 3 is still keeping old pictures in its cache.
A script for a client had photos and content change everytime you went back to a page, but unfortunately the original photo was caught in the cache in Firefox 3. However, it should have worked fine using the two meta commands below in the header of the page.
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<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1">
For anyone else running into this same situation I found a solution that I added in with the other two tags.
<?php header("Pragma: no-cache"); ?>
I am not quite sure why Firefox needs it this way, but it fixed the problem for my client.
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