polylang – date in french?

The problem probably comes from your WordPress languages files. Go to https://svn.automattic.com/wordpress-i18n/fr_FR/tags/3.5.1/messages/ and upload the files in wp-content/languages/

I add the same problem as you and there are different ways to change this.

First, you can have a look in the Language Settings to String Translation. There is a space for dates.
Switch d-m-Y to j-F-Y !

Tell me if this helps, if not I’ll try to find what other way I used.

@chouby

thank you, that was the solution.

the dates work perfectly now

much appreciated