Dynamic Menu Partially Translated

Imported From: http://groups.google.com/group/in-portal-bugs/browse_thread/thread/9f12f70b41088e85#

I'm using all the multilingual power of In-Portal, and I came to a bug for dynamic menus: while all sub menus are translated in system, only one submenu is displayed in the other language in dynamic menu.

On http://g.guideduvignoble.fr/%E4%B8%AD%E6%96%87/vignobles.html page, you can see all sub menus in content page, correctly translated, but if you go to the top drop down dynamic menu (the 2nd from the left), you'll see that only 1 is translated in this menu. I've tried to clear sms menu cache, cache table, system/cache folder, but still no effect.