I just upgraded to 3.6.1 and some of my Unicode characters and spaces are displaying as question marks. I read all of the posts about this problem and its solutions and I've tried them all, including:
* Making sure that my database, page header, and wp-config all say utf-8.
* Trying to change the page header to iso-8859-1.
* Adding AddDefaultCharset utf-8 to my .htaccess file.
Is there something else I should try, or has anyone else encountered this particular issue with this particular upgrade? Thanks!