Force regeneration of thumbnails ?

[Renaud (Ron) Olgiati]

A recent problem:

-I took a number of pictures, and moved them from the camera to a directory.

-Pictures no good, so I erased them from directory, and took a new serie.
As the former serie had been deleted from the camera, the same filenames were 
used again for the new pictures.

-Moved new pictures to the same directory, and was surprised to see that KDE 
had kept the thumbnais of the first serie, so the thumbnails it displayed now 
bore no relation to the new pictures, except for having the same name.

Is there a way to force KDE to re-generate the thumbnails for a directory ?
 
Cheers,
 
Ron.
-- 
              Though a good deal is too strange to be believed,
                   nothing is too strange to have happened.
                                                -- Thomas Hardy
                                    
                   -- http://www.olgiati-in-paraguay.org --