Admin Javascript

I am having some problems with the Javascript in the admin area. it fails to load in any browser. Its the same problem as described here: http://wordpress.stackexchange.com/questions/6620/admin-panel-javascript-not-loading-properly-cannot-edit-pages-posts but running on a Linux web server. Does anyone know of whats causing it?

I have added this to the wp_config file but still no luck!
define( ‘CONCATENATE_SCRIPTS’, false );