Sounds a little like ajax called content is being cached separately in some way.
Do you have any other plugin (or the theme) that uses the jQuery dialog – the same popup we are using?

Most probably, yes. I believe the NextGen Gallery plugin relies on jQuery – it’s quite a popular plugin so other site owners will likely encounter this when you come out of beta. Is there a workaround?

I’m not sure if any of my other plugins use jQuery – how can I check?

i wasn’t meaning jQuery but specifically the jQuery ui dialog popup. I was really wondering if another plugin were using it but this is probably a red herring anyway.

Why an ajax call would be cached unless specifically coded for is a little beyond me to be honest. One thought – what browser is this and is the result the same in other browsers?

I’ve tried it on two PCs, using Chrome, Safari and Firefox, and it does it every time. I’m not sure which browser was being used by the person who originally reported it to me. My Mac is out of service at the moment so I can’t check on that.

Then still puzzled!

One thought – are you and this other user admins/moderators? And if so do you have posts awaiting moderation? I ask simple because if there are posts awaiting moderation these will be added to the display…

Nothing is pre-moderated. Anything people post goes up automatically. I’m a mod and administrator, but the other person is just a user with basic posting rights.

If you’d like a password to take a look at the setup let me know and I’ll PM it to you.

To be honest there would be nothing to look at.
I really need steps to replicate the issue…

Sorry, I’m not sure what that means.

I’ll try disabling plugins one by one to see if there’s a conflict. If there is I’ll report back.

I doubt there is a conflict issue with a plugin unless something IS caching ajax calls which is doubtful.

What I was meaning is that I don’t see this behaviour so I could do with knowing the exact circumstances under which it happens. Not an easy thing to come up with I realise.

As it happens, I did disable all the plugins yesterday (apart from SP) and it still happened. If I think of anything else that might be causing it I’ll let you know.

Please yes. The ‘new posts’ list is calculated on each page load. Try clearing it out and logging out completely. Then log back in and see if you can see the conditions under which is goes askew.