[support] css overrides with zen subtheme

Hi, I have created a zen subtheme using zenophile. The styles for this theme are not being applied. I have come to the conclusion that Drupal core styles are still getting priority. As an example Firebug reveals the following for the site header: http://localhost/smbDev/sites/default/files/css/css_t1WbbTV96Qw-2gA2kCclBnfz... #header .section (line 3) { } I have tried clearing all caches, checked permissions and looked at apache logs and am now out of ideas. Can anyone help?