Firefox Cache

Right, so i browse /b/ often with Firefox. Problem is, sometimes i open images in tabs, and forget to save them immediately.

I come back in an hour and try to save them, but Firefox is gay, and refuses to save from cache. It wants to redownload the image from the internet.

By this time, /b/ has already purged those images from the server.

Is there anyway to browse Firefox's cache, or tell Firefox to save images from cache if downloading from the server is impossible?

PS, I can't seem to do it from about:cache .. and the actual cache files don't have extensions, so i don't know which are images, which are html, swf, etc.

I have it set to "Check Documents: Always" "Check Images: Never" "Check Other: Never" uncheck "Always Check Redirect" and make sure "Empty on Exit" is unchecked, too.

The only time it ever slips up, is when Opera crashes for whatever reason. Sometimes when it crashes, some cache is lost .. other times, the cache is fine. Just be careful about closing opening multiple Opera windows, or make sure to save sessions. THough i'm not sure how session saving will affect cache.

Try it and find out.