> > what process would that be.
> 
> Your webserver should also be running (which could also have the files
> open, hence the permissions error).
> 

It happens when the flder apperas empty too.

Thry this:
1. Create a new folder on the desktop
2. Right click, then "new-> bitmap image"
3. Right click on the image, select edit
4. Put something into the image, save it. Close you image editing program
5. Turn on thumbnail view
6. Try and delete the folder by draging it to the recycle bin, keeping
the view of the folder open (won't work)

Think that it is the image still in use?

7. Delete the image from the folder (will work)
9. Close the view of the folder
8. Folder is now "empty" but you still can't delete it.

Douglas