I have a problem with the Chosen plugin : the close/delete button doesn't appear after each choice made in the multiple select field (the search icon in standard select as well but I don't care...).
It seems to be a theme conflict again... (tested with twenty ten : close button appears)
I posted a previous topic for another issue for which the reason was a theme conflict.
The last dedicated update (1.6.7) solved perfectly this AJAX issue but the chosen plugin issue is still here.
in "Catégorie" filed for example
Thanks for your help (again!)