We fixed a djvu file adding some missing pages. Now, something strange
appears. Take a look at
http://it.wikisource.org/wiki/Pagina:Delle_strade_ferrate_e_della_loro_futu….
Then enter in edit mode. The thumb showed in view mode comes from the old,
wrong page; the thumb showed in edit mode is the right one.
Can we force purging of such old thumb/image, presumably saved somewhere
from the old djvu file?
Alex