As per discussion that took place here, http://groups.google.com/group/symfony-users/t/b4950dd116b8aa3e?hl=en there were several problems with the sfWidgetFormTextareaTinyMCE widget. Attached is a patch that I have been successfully using in production environment. It is meant to work with TinyMCE 3.2 and up, and it produces XHTML compliant code. It also makes possible the use of gzip compression and offers an alternative syntax to set the dimensions of a textarea tag ('size'=>'120x30'), identical with the one in Symfony 1.0 admin gen. Another extra is the ability to provide a file browser callback directly as an option (it defaults to the sfAssetsLibraryPlugin callback).