problem with order in widget

I’m using this plugin (thx for it) in http://www.diocesisvitoria.org.

But in the widget, publications aren’t in the right order… In fact, I can’t understand the order…
In the definition, I set order by: Latest (publish date). And if you go to http://www.diocesisvitoria.org/publication/, you can see the right order of publications.

Any idea? Thanks in advance

http://wordpress.org/plugins/wp-publication-archive/