Avoid username output as a class of an article tag Drupal 7 generates a username class for the article tag, something like : class="node node-page node-published node-not-promoted node-not-sticky author-username odd clearfix". 
I'd like to avoid to have the username output in the code for security reason. 
I have tried the userone module, but it doesn't work for this. 
I am thinking about some Jquery code, but a better way would be to avoid the username to be output at all. 
I was looking in the core modules but I didn't find the php file that generates this author-[username] class. 
Any help?
I think you can blame Omega for that one, in omega_alpha_preprocess_node() you'll find this:

$vars['attributes_array']['class'][] = drupal_html_class('author-' . $vars['node']-&gt;name);


I think you've got two options:


Remove that preprocess function altogether, using hook_theme_registry_alter(), and duplicate it into MYTHEME_alpha_preprocess_node(), minus the offending line.
Implement MYTHEME_alpha_preprocess_node(), search through the $vars['attributes_array']['class'] array, and remove it from there.