Hi Joy,
Thanks for the reply – that totally makes sense about the multiple author thing. It’s just me running my site so that definitely didn’t occur as a potential issue.
I am using a caching plugin, but I always clear the cache after making changes, but I totally forgot about my own browser’s cache! It certainly is an awful lot of effort just to get an image to show up >_<
The expires headers thing is not something I was aware of (or that there are plugins to control that) so I’ll do some research into it!
Thanks so much for the reply – always glad to learn new things about how WordPress works! ??