I got it to work. You were correct in stating: How do you have configured the Apache↔PHP interface? You most likely do so via libapache2-mod-php5; if so, editing /etc/php5/cli/php.ini will have no effect, you have to edit /etc/php5/apache2/php.ini
In /etc/php5/apache2/php.ini this file I uncommented: mbstring.http_input = pass mbstring.http_output = pass instead of: ini_set('mbstring.http_input', 'pass'); ini_set('mbstring.http_output', 'pass'); >From what little I know, the above would work as an Apache config file. (i.e. .htaccess, htaccess) though it didn't work for me in the /etc/drupal/7/htaccess file. It may have worked in a .htaccess file in the correct directory. I will read through the links you provided. Thanks, Mark