Hello, I upgraded my website to 3.5.1 few days ago, i noticed that my Media Library is not working, i can't insert images to my posts or slide posts through media library. I tried everything, i deactivated all the plugins, i cleared the cache plus cookies. i double checked the media full url path. I also added define('CONCATENATE_SCRIPTS', false ); in the wp-config.php but nothing is working. I spent many hours to reslove it but. It's not working. Please help me where is the problem.