This is an implementation issue rather than a spec issue. It's basically just because of the way the Firefox network cache works. When we play an Ogg video we generally don't download the data in a single continuous HTTP GET; if the server supports byte Range requests, we actually seek to various places in the stream at different times to fetch metadata etc. So the network cache never sees a request that returns the complete resource, and never caches it. We do have a special "media cache" that's good at caching fetched media data, but "Save As" doesn't know about the media cache. We could fix that, but it would be somewhat complex and to be honest it's probably not worth it.<br>
<br>Rob<br>-- <br>"He was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was upon him, and by his wounds we are healed. We all, like sheep, have gone astray, each of us has turned to his own way; and the LORD has laid on him the iniquity of us all." [Isaiah 53:5-6]<br>