A virus on his machine or some software on his machine,
as its only happening too him.

So i think its his machine only and not your server imo

Interesting thought Mark.

Although I've not heard of such a virus, I don't see why there shouldn't be such a thing...

The other variable of course, is that he's in the Arabian Gulf.

They have all sorts of weird restrictions (and caching) in place out there.

He is also probably using an old version of firefox.. it happened to my boards for a while till I told the guy to get with the program and use IE it abruptly stopped..

Last night he posted using IE & FF and guess what? Yep - 1 post from each of them each time he tried.)

So if it's intermittent, perhaps it's a server or geographic issue?

I'm getting this with 7.3.1, and all the posts are the same ID.

So far its always the same user and it isn't just 1 or 2 posts, its hundreds of repeated posts.