Refresh localhost site does not reuse CSS, images, or javascript resources

If I go here:
http://localhost/sitefolder/
I get the full page and all resources. "Reload current page" and Firefox 8.0.0 will not request the resources, nor will it fetch any cached resources.

If I go here:
http://www.FQDN.com
I get the full page and all resources. "Reload current page" and Firefox 8.0.0 will display any resources in the cache after getting a 302 response.

This is observed with LiveHTTPHeaders 0.17.

However, RequestPolicy shows requests for these resources being made and not blocked.

I'm not sure what I would use to monitor hits from the cache. If there is a cache.

Setting the network.http.use-cache config to false will fetch all resources all the time from the server. Setting it back to true will return FF8 back to not fetching/displaying resources from localhost.