Is there meant to be full support for PHP 5.3 in PhpED 5.9? I ask because namespace declerations and other namespace related portions of code are still underlined in red indicating a syntax error. It runs in PHP 5.3 just fine though. I'm currently running build 5915. Does anyone know what's happening with syntax support for PHP 5.3?

Have You set accurate parser in project's settings (Parser Tab)?

No I hadn't. I've now set PHP 5.3 as the system wide default, which was set to PHP 5.2. I would have that though that choosing "Associate .php file extension with PHP 5.3" during install would setup the program for PHP 5.3.