Visio 2007 - something is causing an image to be saved without my say so!

[Paul Herber]

Today I was messing about with some shapes to do with topic http://visguy.com/vgforum/index.php?topic=641.msg2760.
I happened to look at the root of my C: drive just now and there is a file there called bar.emf, an image of the shapes I was working with. Now, I'd noticed something like this some time ago with another image of some work I'd been doing, of the same name and wondered where the file came from as I didn't remember saving it. This time I certainly didn't save any file and certainly not of that name in that directory.
Something appears to be saving this file without my say so, any ideas?

[wapperdude]

Hi Paul --

Don't know if it's a Visio feature or an Office feature (haven't explored that far).  You've probably already searched the internet about it -- not too much there.  Also, not sure what triggers it, my last creation of it was May 7th, it's an Org Chart shape.

Just wanted to let you know you are not alone!

[Paul Herber]

Thanks Wayne, I've seen no sign of it since, must be a Visio feature though, no other Office apps on this machine.