Thanks Hew. A side-note. That response header (304 Not Modified) shows the file is already in the browser's local cache so nothing is fetched - hence no Content-Type, etc.
During testing I have been clearing the browser cache using Edit > Preferences > Privacy With "Ask me before clearing private data" selected press the "Clear Now..." button and deselect everything but "Cache" then press the "Clear Private Data Now" button. -- firefox - the associated helper application does not exist https://bugs.launchpad.net/bugs/239952 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs